Your Questions, Answered in One Place

Founded in 1999 and headquartered in Hong Kong, HENGSHENG MARBLE S&T CO. LIMITED is an independently operated stone specialist financed entirely by self-owned capital from local shareholders. It is not part of any group and is not a listed company. Over 27 years we have focused on global sourcing, precision processing and project delivery of natural stone, serving 4,200+ projects across 60+ countries and regions.

Audited by SGS, we hold ISO 9001 quality management, ISO 14001 environmental management and ISO 45001 occupational health and safety certifications. Our products carry EU CE construction product compliance, GREENGUARD Gold low-VOC certification and NSF/ANSI 51 food-contact material safety certification, with third-party test reports available from SGS and equivalent bodies.

We maintain long-term partnerships with 50+ premium primary quarries in 60+ countries, covering Italy, Greece, Turkey, Brazil and Spain. For scarce materials such as G682 yellow granite, white granite, natural marble and volcanic stone we secure priority allocation and stable production capacity.

No. HENGSHENG MARBLE S&T CO. LIMITED is a service enterprise financed wholly by self-owned capital from local shareholders and operated independently. We are not part of any group and have no listed entity. We operate to international governance standards with a high degree of transparency, a short decision chain and a long-term industrial vision rather than short-term financial returns.

We control the full chain from quarry to finished product: partner quarries, European fully automatic production lines, 68 inspection checkpoints, proprietary warehousing and cross-border logistics. Disintermediation means transparent pricing, controllable lead times and traceable quality, plus one-stop service from selection and processing to installation guidance.

Yes. Our dust-free intelligent production base operates five-axis CNC machining centers, fully automatic polishing lines, precision carving and shaping equipment, backed by large-scale bonded warehousing with extensive ready stock. Multiple mega-projects can be scheduled in parallel with long-term supply guaranteed under a project production plan.

Our portfolio covers international five-star hotels, luxury residences, commercial complexes, convention centers, airport transport hubs, metro stations, museums, hospitals and government buildings — 4,200+ delivered projects in total, of which 1,000+ are five-star and high-end hotels, with repeat and renewal business consistently above 85%.

The production base is equipped with photovoltaic power generation and intelligent energy management, targeting 30% annual carbon reduction, 95% process water recycling and over 85% comprehensive waste utilisation. Offcuts are reused in mosaic patterns, engineered stone panels and construction aggregate, while quarry partners implement vegetation restoration and soil conservation programs.

Yes. We routinely support supplier audits by international hotel groups, main contractors and brand owners, providing quality system documentation, environmental and OH&S records, social responsibility reports and third-party test reports, and we welcome customer representatives or SGS inspectors for pre-shipment inspection.

We suggest reading "About HENGSHENG MARBLE S&T CO. LIMITED" for positioning and history, "Honors & Certifications & Honors" for the certification matrix, "Global Quarry Network" for sourcing coverage and "Technology Centre" for processing and testing capability — or simply submit your requirements for a one-to-one consultation.

We supply natural stone from 60+ countries including Italy, Greece, Turkey and Brazil, covering marble, granite, limestone, travertine, sandstone, onyx and luxury stone across 300+ regularly stocked varieties. We can also match a sample or photograph against our global quarry database.

Marble offers decorative veining and suits aesthetic-focused interiors such as hotel lobbies and villa feature walls. Granite is harder, more wear-resistant and weather-resistant, making it the choice for high-traffic malls, airports, metro stations and exterior cladding. Use granite for heavy wear and outdoor areas; reserve marble for visual focal points and low-abrasion zones.

Interior dry-hang wall cladding is typically 18–20mm; flooring starts at 20mm, rising to 25–30mm for heavy traffic or load-bearing areas. Countertops and furniture panels commonly use 20mm with a thickened edge. Exterior cladding thickness follows wind-load calculation and local codes, often 25–30mm, or a lightweight honeycomb composite alternative.

Colour and texture variation is a natural attribute of stone. We control it systematically through a triple-guarantee mechanism: the contract locks the same quarry block and batch → every panel is inspected against the agreed color-grading standard before shipment → production-line photos are provided for confirmation before mass production. Slabs are zone-numbered by texture and color and dry-laid for preview, keeping variation within internationally accepted limits (ΔE < 3); multi-phase projects draw on a unified batch allocation with QC reports attached, ensuring consistent whole-wall and whole-floor effects — one of the core reasons 4,200+ institutional clients keep returning.

The mineral composition and textures of natural stone formed over hundreds of millions of years of geological change — promising "zero color variation" is neither realistic nor honest, for the veining is precisely where the value of natural stone lies. Our commitment is that variation is locked within the grading standard written into the contract, and the overall effect across walls and floors is confirmed through dry-lay preview before production — turning natural veining into a design highlight rather than a quality concern.

Book-matching mirrors two adjacent slabs along a central axis to create symmetrical butterfly veining, often used for lobby feature walls. Vein-matching aligns multiple slabs in sequence so the veining runs continuously across the surface. Both require dedicated production planning at the cutting stage, so please specify them at drawing stage.

We offer polished, honed, leathered, flamed, bush-hammered, sandblasted, antique and brushed finishes among 10+ options, customised to the design style, required slip rating and maintenance conditions of each space.

For wet areas, pool surrounds and outdoor steps we recommend textured finishes such as flamed, bush-hammered or sandblasted, with dynamic coefficient of friction (DCOF) measured to ANSI A326.3. Polished or honed finishes suit dry interior areas. We recommend a slip class based on usage and local code and provide test data.

Natural stone radioactivity is extremely low. Every batch is tested for radionuclide limits in accordance with GB 6566 and complies with Class A decorative material requirements, making it suitable for residences, schools and hospitals. Third-party test reports are available on request.

Natural stone is our core business, but we can advise on quartz, porcelain slab and honeycomb composite alternatives, comparing veining, physical performance, maintenance cost and budget to help you reach the best specification decision.

Yes. Send a physical sample or high-resolution photos and we will match against our quarry database by base color, vein direction, crystal structure and gloss level. Candidate materials and pricing are usually returned within 3–7 working days; rare stones can trigger a global search.

For countertops we recommend dense, low-absorption granite or quartzitic stone, particularly darker granites. Marble countertops require penetrating sealers and will develop patina. In wet bathroom areas prioritise slip rating and acid resistance, avoiding limestone and travertine which are sensitive to acidic cleaners.

Luxury stone refers to scarce varieties with rare veining, very limited extraction and gem-like or translucent quality, usually priced per slab and requiring dedicated selection. Standard marble offers stable supply and accessible pricing for large areas. The two work well together: luxury stone for focal points, standard material for the field.

Price is driven by stone rarity, block grade, slab size and thickness, surface finish, processing complexity, yield loss and order quantity. Quotations are generally per square metre or per piece, with separate processing, packing and freight lines itemised for full transparency.

Natural stone is graded: quarry origin and face, color uniformity, vein integrity, control of cracks and spots, and slab size (yield per block) all create price differences. Higher grade, larger format and more complete veining command higher unit prices.

Yes. Our formal quotation itemises stone type, grade, specification, quantity, unit price, processing method, lead time, payment terms and validity (typically 15–30 days). After order confirmation we issue a proforma invoice, available in Chinese and English.

Yes. Pricing is tiered by volume, project duration and payment terms across three levels: sample trial order, standard batch and strategic framework procurement. Long-term partners can sign annual framework agreements to lock a price band and reduce market volatility risk.

Standard quotations are ex-works or FOB. International sea freight, insurance, customs clearance and destination charges follow the agreed Incoterms. With mature cross-border trade capability we can calculate landed cost and provide complete documentation.

Confirmed orders with a paid deposit are price-locked. Unconfirmed quotations are valid for their stated period; beyond that, significant movement in block cost, freight or exchange rates may require adjustment, which we will communicate in writing in advance along with alternative options.

No. We quote transparently. Any potential charges — layout design, special packing, oversized slab surcharge, expedited production, third-party testing — are declared at quotation stage. We never add unapproved costs after production begins.

Standard samples (approximately 10x10cm or A4 size) are usually free, with courier cost borne by the customer. Large sample panels, full slabs or specially processed samples are charged at cost and can be credited against the order value, subject to sample request confirmation.

Yes. While preserving the design intent we can recommend visually similar but more steadily supplied stones, adjust formats to improve yield, switch to composite panels to reduce weight, or optimise layout to cut waste — typically saving 10%–25% of total cost.

Typically a deposit of 30%–50% on signing, with the balance before dispatch or against a copy of the bill of lading. Cross-border orders support T/T and L/C. Long-standing and strategic customers may apply for more flexible credit terms based on track record.

Total project cost includes yield, processing waste, installation speed, rework risk and long-term maintenance. Cheaper material often brings higher breakage and color-variation risk, raising total cost. Compare the unit cost of qualified material delivered to site, plus service and guarantee capability.

Custom project work carries no hard minimum order — we serve everything from sample trials to full-scale project supply. Cut-to-size wholesale starts from 50㎡, slabs are sold per piece, and small volumes for show flats and demonstration units are equally welcome; trade orders carry tiered MOQs by stone type and grade. Our 27+ years of direct quarry procurement and batch production mean even small orders enjoy factory-direct pricing with no middleman markup.

In-stock cut-to-size slabs below 50㎡ can be purchased at retail prices with no minimum-order threshold; for show flats and demonstration units, please speak with our consultants for case-by-case arrangements. Our tiered pricing lets small orders enjoy factory-direct pricing too — only the volume tier and unit-price level differ.

Yes. Multiple stone types and specifications within a single order are measured on a combined basis and matched to the corresponding tier; long-term framework clients can also aggregate on a rolling quarterly basis to reach higher wholesale tiers.

No. Show-flat orders go through a high-specification express channel and share the same 68-point QC system and sealed-sample regime as bulk production. Precisely because show flats are the first space owners and designers see, we are even stricter on slab selection and surface finishing.

Hong Kong stock policy is consistent all year round — stock lines are unaffected by season; custom production runs fuller in peak seasons (March–June, September–November), so we recommend ordering 2–4 weeks ahead to secure capacity slots, while off-season orders enjoy shorter production queues.

The standard flow is: requirements briefing and selection → quotation → sample approval (dry-lay approval optional) → contract and deposit → production scheduling and processing → factory inspection with image archive → packing and dispatch → logistics tracking → site acceptance and after-sales follow-up.

Please provide drawings or a cutting list (dimensions, quantities, edge profiles, cut-outs, grooving), surface finish and thickness, acceptance criteria, required lead time, destination port or delivery address, and any applicable building codes or certification requirements. More complete data means more accurate pricing and scheduling.

Changes to specification, quantity or processing are possible before production starts. Once cutting or processing has begun, changes incur material and labor loss and require re-quotation of cost and lead time. We recommend thorough drawing review before release.

Yes. Large projects are commonly shipped in batches matched to site progress. We support staged production, packing and dispatch, with independent inspection reports and packing lists for each batch to facilitate zone-by-zone acceptance on site.

The contract specifies stone grade, dimensional tolerance, surface finish, acceptance criteria, lead time, payment and liability for breach. In case of dispute, the sealed approval sample and written technical agreement govern, with arbitration testing by SGS or another third party where necessary.

Yes. For engagements involving design schemes, project information or pricing structures, we can sign a mutual NDA to protect your commercial information and intellectual property.

Our core business is engineering and wholesale, but we also accept small-batch customisation for villas, private clubs and furniture countertops. For retail enquiries please start with a sample and solution consultation; we will assess feasibility and economic batch size.

Yes. After scheduling we report progress at each node — block cutting, shaping, polishing, inspection, packing, dispatch — with image records at key operations. Your dedicated contact can update you on production and logistics status in real time.

Cancellation before production incurs only selection and design costs already incurred, with the balance refunded. Orders already in production are settled pro rata by completion stage. For customer-caused delays we can arrange storage, with warehousing fees applying for extended periods as agreed.

Our equipment includes Italian Breton NC260 five-axis CNC machining centers, fully automatic polishing lines, precision carving machines and shaping equipment, delivering cutting, edging, bevelling, drilling, grooving, carving, complex curves, cylinders and curved panels with micron-level accuracy and error ≤ 0.1mm.

Yes. Five-axis CNC handles double-curved surfaces, spiral stair stringers, shaped columns, art sculptures and complex facade elements, importing three-dimensional models (STEP/IGES/DWG) directly to the machine. Shaped-part accuracy improves around 40% versus conventional methods, reducing on-site rework.

Standard profiles include straight, chamfered, small bullnose, half bullnose, full bullnose, ogee, bevelled and laminated thickened edges, plus functional details such as drip grooves, anti-slip grooves and joint grooves. Edge choice affects both appearance and safety, so select it with the location and design style in mind.

Composite panels bond a thin natural stone facing to an aluminium honeycomb or fibreglass backing, cutting weight by 50%–70% while markedly increasing flexural strength. They suit high-rise cladding, lift cars, marine interiors and load-sensitive renovation projects, and reduce consumption of scarce stone.

Yes. Our five-axis waterjet equipment produces stone medallions, inlays, mosaic compositions and mixed-material work with metal or glass, cutting directly from CAD drawings with high joint precision for hotel lobby floors and feature walls.

Slabs are uncut standard-format panels (commonly 2400x1200mm and above), suited to on-site fabrication and flexible layout. Cut-to-size material is precisely cut to project dimensions and arrives ready to install, reducing site cutting waste and dust but requiring early dimension confirmation.

Yes. Our shop drawing service uses site-measured dimensions and vein numbering to produce panel layouts, vein direction, joint positions and numbered schedules for designer and owner approval before production, ensuring the installed result matches the design intent.

Standard cut-to-size dimensional tolerance is within ±0.5mm and thickness within ±1mm, with diagonal and flatness to international engineering standards. Precision-fit elements such as matched wall panels and spiral stairs can be produced to tighter tolerances with measured reports supplied.

Deep-penetrating nano protection forms a transparent barrier within the stone's micro-pores, blocking stains, acid rain and mould growth without altering natural color or veining. Verified by SGS third-party testing, it extends service life three to five times, especially in humid or highly polluted environments.

Yes. We undertake to-drawing processing and OEM production: you may supply drawings, material or simply a design concept, and we complete selection, cutting, processing, inspection and packing, with neutral packaging and documentation under your brand if required.

Waste depends on the stone's natural fissure rate, format size, layout complexity and veining requirements. We estimate yield loss from the drawings at quotation stage — typically 8%–20%, higher for vein-matched or large-format work — and write it into the contract to avoid settlement disputes.

Yes. For key projects we provide digital slab scans, numbered schedules and specification data compatible with BIM workflows, together with digital remote inspection (VR selection plus AI quality reports), enabling overseas clients to make critical decisions without travelling.

We operate an end-to-end quality system covering quarry sourcing, raw-block selection, production, finished-goods inspection and pre-delivery acceptance, run to ISO 9001 with 68 quality checkpoints and a factory pass rate of ≥ 99.5%. Sealed samples are archived as the acceptance benchmark for bulk production — any deviation beyond the agreed standard is remade free of charge; 1,000+ benchmark projects with zero major quality claims over the years is the most direct endorsement of our quality system.

Samples and bulk goods are locked to the same quarry block, eliminating batch drift at the source; production-line photos are provided for review before mass production, and delivery is accepted against the sealed sample — remakes are free if differences exceed the agreed standard.

The grading standard written into the contract and the sealed sample signed by both parties prevail, keeping disputes objective; for key projects, third-party re-inspection by SGS can be agreed in advance, whose conclusion serves as the final basis of acceptance.

Yes. Every shipment comes with its QC report, and third-party test data for the corresponding sample can be provided in advance; before ordering you may also request full report samples for the target stone (physical properties, chemical composition, radioactivity, etc.) — review the report before you decide.

Any deviation from the sealed sample, however small, must be confirmed in writing and the sealed sample updated accordingly — verbal changes are excluded; deviations without written confirmation are judged strictly against the original sealed sample at acceptance.

Inspection covers dimensional and thickness tolerance, flatness, squareness, gloss, color difference (ΔE), compressive and flexural strength, water absorption, abrasion resistance (ASTM C1353), slip resistance (ANSI A326.3 DCOF), radionuclide limits (GB 6566) and heavy metal content.

Yes. Each batch carries a dedicated inspection report and image archive showing batch number, test items, standard references and measured values. Independent verification by SGS or equivalent can be arranged where required.

We provide pre-production dry-lay photographs or on-site dry-lay approval, and the approved sample governs acceptance. If delivered material differs beyond the agreed range from the approved sample, we take responsibility for replacement or rework after verification, responding within 24 hours.

Natural features including color spots, color lines, fine fissures and pinholes are inherent to natural stone rather than defects. We control their distribution and density by grade, and repair or reject any cracks or through-holes affecting structural integrity, using repair techniques that do not compromise appearance or performance.

By consolidating purchases from a single quarry face, reserving sufficient block volume for the project at the outset, cutting in block sequence, unifying polishing parameters and protection processes, and managing numbered layouts, we keep color, veining and gloss consistent and avoid batch-to-batch variation.

Yes. We welcome inspection by customers or their representatives and can arrange third-party inspection by SGS or Intertek. Clients unable to travel can use digital remote inspection with high-resolution imagery, VR selection and AI quality reports.

We use export-standard fumigated wooden crates with steel banding, layered pearl cotton and corner protection, foam paper between slabs, and external numbering with fragile markings. Large shaped elements receive dedicated wooden frames. All packaging is proven through long-distance sea freight and repeated handling.

We stand behind the material quality and workmanship of everything we ship, with warranty scope and period written into the contract: one-year warranty on dry-hung components with 48-hour response during the warranty period; quality issues arising from material or workmanship are remedied by replacement, rework or agreed compensation; transport breakage is replaced free of charge against layout numbering; every shipment includes third-party test reports and a maintenance manual. Damage from improper installation or maintenance falls outside the warranty.

Efflorescence occurs when alkaline substances in cement mortar migrate to the surface with moisture. We recommend low-alkali adhesives, back-coating sealer, controlled moisture during installation, proper drainage and movement joint design, plus six-sided protection at the processing stage if necessary.

Testing follows ASTM (US), EN (EU), GB (China) and JIS (Japan) systems, including ASTM C503/C615 for marble and granite, EN 12057/12058 for slabs and paving, and GB/T 19766 for natural marble slabs, among others.

Our intelligent system covers over 40 critical checkpoints using optical scanning plus manual re-checking: high-resolution scans detect spots, cracks and dimensional deviation, AI assists grading, anomalies trigger automatic alerts with image records, and every slab is traceable to its block batch and machine.

Hong Kong warehouse stock of 5,000㎡+ is available for immediate collection, with popular stones deliverable same or next day; regular stock lines ship within 7–15 working days; custom fabrication takes 20–35 days on our own CNC bridge saws and five-axis machining centers — no third-party queuing; large projects follow a dedicated production plan with phased delivery and an emergency re-sourcing mechanism for unexpected shortfalls. A clear production milestone schedule is issued at contract signing and progress is tracked end to end.

Yes. With our own Hong Kong warehouse at the core radiating across the Greater Bay Area, and direct procurement from quarries in 60+ countries supporting worldwide export: fumigated export-grade wooden crates, fully tracked sea freight, and one-stop certificates of origin, packing lists and insurance cover. The delivery record of 1,000+ benchmark projects — Dubai's Burj Al Arab and Shanghai IFC among them — is the best proof of our cross-border capability.

For Hong Kong stock items, yes. In-stock cut-to-size slabs can be collected same-day or delivered to site next day; special sizes cut on site add 1–2 days; custom processing follows the production cycle (typically 20–35 days). Mark your project "urgent" to activate our green channel.

Yes. Our consolidation service mixes multiple stone types and specifications to fill a full container, so small-volume orders can also share the cost advantages of export logistics; loading plans are optimised by slab size, balancing container efficiency with transport safety.

After departure the bill-of-lading number is trackable end to end, and your project manager regularly syncs vessel schedule, arrival and customs status; key milestones (container stuffing, sailing, arrival, delivery) are proactively notified — no need to chase every step.

Lead times are written into the contract with agreed liabilities for breach — not verbal promises; weekly progress reports are available throughout production, and deviations are flagged early with remedial plans rather than explained afterwards. Our own factory and Hong Kong stock reserve are what make on-time delivery dependable.

Yes. A framework agreement can lock annual capacity slots and price ranges, executed in batches against project milestones; even if raw-material costs or exchange rates move, locked portions are unaffected — greatly improving budget certainty.

Key factors are whether blocks must be specially purchased, processing complexity (shaped parts, medallions, vein matching), order quantity and scheduling sequence, surface and protection processes, inspection arrangements, and shipping space plus customs clearance. Early drawing approval significantly shortens lead time.

Yes. Where capacity allows we can expedite production, assessing the impact on existing orders and quoting realistic time savings and any express fee; standard custom work takes about 20 days, while complex projects use the express channel — with the precondition that no QC step is skipped. We recommend allowing standard lead time and locking production slots early.

With mature cross-border trade capability we arrange FCL and LCL sea freight, air freight and multimodal transport, handle customs declaration, insurance and documentation (bill of lading, packing list, invoice, certificate of origin, fumigation certificate), and provide end-to-end tracking.

We pack to export standards and insure every shipment in full, with photographic records taken before dispatch. If damage occurs, photograph it on receipt, note it on the delivery docket and notify us within 24 hours; we will assist with the insurance claim and replace panels free of charge against layout numbering, keeping your program on track.

Check crate count and numbering against the packing list, then open crates to verify specification, quantity, finish and appearance, and cross-check batch numbers with test reports. Retain packaging and photographs of any issues and notify us in writing within the agreed period. Store accepted material properly, protected from sun and rain.

Yes. We support customer-nominated forwarders and customer courier or shipping contract accounts, and can also provide door-to-door (DDP/DDU) service. Either way we ensure packing and container loading meet long-distance transport requirements.

Store slabs vertically on dedicated A-frames rather than flat under load. The storage area must be level, dry and ventilated, protected from sun, rain and acid or alkali contact. Separate batches and numbers clearly, use first-in first-out, and avoid secondary handling damage.

Yes. We maintain extensive ready stock at our dedicated warehousing park and can advise available specifications for common stones. Stock material greatly shortens lead time and suits tight programs or replacement needs.

Late-stage replacements are common. We seal and reserve spare stone for every project, so replacement panels are drawn first from the reserved batch for identical color; where spares run short, we prioritise matching the original quarry block and keep layout records to ensure texture continuity. We recommend reserving an appropriate allowance at the time of the main order to shorten replacement lead times.

Tariff classifications, radioactivity and fumigation requirements differ by country, and some markets impose additional access certifications (e.g. CE for the EU, SASO for Saudi Arabia). We know the customs rules and trade practice of each market, prepare material descriptions, test reports and certificates of origin to destination-country standards in advance, and our documentation team assists throughout — minimising clearance risk.

We provide technical support and installation guidance, and can deploy technicians for site briefing and inspection, while laying and installation are performed by the client or a professional installation team. We work with quality installers in many regions and can recommend suitable teams for your location.

Interior walls typically use dry-hanging (stainless steel brackets or undercut anchors) or thin-set adhesive fixing. Floors generally use mortar bed or thin-set adhesive. Exterior cladding mainly uses undercut anchor dry-hanging with wind-load and seismic calculation. Method selection depends on substrate, height and code requirements.

Verify substrate flatness and strength, complete waterproofing acceptance, set out lines and confirm the layout, then dry-lay delivered material to check color and vein direction. Prepare matching adhesive, grout, sealer and specialised tools in advance rather than sourcing mid-installation.

Clean off adhesive residue and cement slurry promptly, cover surfaces with protective film or board to prevent contamination and impact from follow-on trades, never drag heavy objects or cut directly on stone surfaces, and fit corner protection on steps and corners until final acceptance.

Interior floors generally need 1–2mm joints; outdoor and large areas require wider joints and division joints per code to absorb thermal movement and structural deformation. Use a low-shrinkage, stain-resistant grout color-matched to the stone, and avoid acidic products.

Hollowing usually results from poor substrate preparation, incomplete adhesive coverage or loading during curing. Minor hollowing can be remedied by grout injection; severe cases require removal and re-laying. Prevention lies in substrate cleaning, correct adhesive selection, proper thin-set pressing technique and adequate curing time.

The key is pre-dispatch dry-lay and numbering: install strictly in numbered sequence without swapping, use one batch per area, and unify light direction and vein orientation per the design drawing. Never mix batches within a single area.

Wind-load, seismic and thermal calculations are required; brackets and anchors should be stainless steel with anti-corrosion treatment; panels need six-sided protection; joints must allow drainage and movement. For high-rise projects consider lightweight honeycomb composite panels and verify with pull-out testing.

After the adhesive bed has fully cured and the stone is completely dry — typically 7–14 days depending on humidity. Clean the surface and ensure it is free of stains and residual moisture before applying penetrating sealer to guarantee performance.

Yes. We supply installation instructions, layout drawings, numbered schedules and a maintenance manual with each shipment, and can arrange online or on-site technical briefings covering adhesive selection, movement joint detailing, protection processes and finished-surface protection.

Contact your dedicated account manager or submit a technical support request on our website with site photographs and a description of the issue. We respond within 24 hours with cause analysis and a remediation plan, arranging remote consultation or a site visit where necessary.

Wipe with a slightly damp mop or a neutral cleaner (pH 6–8). Avoid cleaners containing hydrochloric or hydrofluoric acid or strong alkali. Remove grit promptly to reduce abrasion and dry surfaces after cleaning to prevent water spotting.

It depends on use and traffic: interior floors generally every 1–2 years, wet areas, countertops and exterior areas every 6–12 months. Use the water droplet test — if water no longer beads but is quickly absorbed, it is time to re-seal.

Blot surface liquid first, then treat with a neutral cleaner or a dedicated stone poultice. Oil stains respond to poulticing with a degreasing paste sealed for 24 hours. Deep ink contamination needs professional treatment. Never use strong acid or alkali, which causes permanent etching and dulling.

Slight dulling can be treated with polishing powder or crystallisation agents. Moderate wear requires professional grinding and polishing, progressing from coarse to fine abrasives. Severe wear can be restored by refinishing to recover flatness and gloss without replacing the material.

Water spots are darker marks from moisture retained in the stone, treated by drying, improved ventilation or a specialist water-spot remover. Efflorescence is a white powdery deposit: remove the crystals, apply back-coating and surface sealer, and investigate the moisture source and drainage.

Marble reacts with acids such as lemon juice, vinegar, soft drinks and some cleaners, causing etching and dulling. Wipe acidic liquids promptly, use boards and coasters, choose neutral cleaners and re-apply penetrating sealer periodically. Light etch marks can be polished out.

Stone conducts heat well and suits underfloor heating, but choose dense low-absorption stone, use flexible adhesive and grout, raise temperature gradually (within 5°C per day on first start-up) and provide adequate movement joints to avoid thermal stress cracking.

Use weather-resistant granite or suitably treated travertine outdoors, apply six-sided protection and adequate drainage falls to avoid standing water. In cold climates verify freeze-thaw resistance to local standards and inspect sealers and joints regularly, re-applying as needed.

Daily cleaning and small-area polishing are fine to do yourself. Grinding and levelling, joint repair, deep stain removal and large-area crystallisation are best left to professionals, since incorrect abrasive selection or localised over-grinding can cause irreversible waviness and uneven gloss.

Routine cleaning costs very little. Professional crystallisation, polishing and sealing are priced by area depending on region and stone condition, and are far cheaper than replacement. Regular maintenance extends service life by decades, giving a clear whole-life cost advantage.

Avoid strong acid cleaners containing hydrochloric, hydrofluoric or phosphoric acid, heavy-duty alkaline degreasers, bleach and abrasive powders, as well as all-purpose cleaners of unknown composition. Choose products labelled safe for natural stone and neutral in pH.

Clean thoroughly and seal before vacancy, maintain ventilation and moderate dehumidification, avoid prolonged direct sunlight and long-term sealed plastic covering which traps moisture haze, and ventilate and inspect monthly to prevent mould and efflorescence.

After-sales covers quality issue response and resolution, replacement piece arrangements, technical consultation and maintenance guidance, plus periodic follow-up and inspection advice. We commit to responding to customer feedback within 24 hours with a written action plan and timeline.

Contact your dedicated account manager through the website form, phone or email, providing project name, batch number, site photographs and a description of the issue. We arrange technical analysis and, where responsibility is ours, agree replacement, rework or compensation.

Yes. For hotels, malls and office buildings in continuous operation we offer annual maintenance programs covering periodic inspection, crystallisation polishing, protective refinishing and consumable supply, helping extend stone service life and preserve space quality.

You are welcome to. We build long-term relationships with design practices, main contractors, engineering consultants and regional distributors, offering product training, technical support, samples and catalog resources, project registration protection and tiered pricing. Please contact us to discuss terms.

We provide stone selection advice, samples and slab photography, CAD and 3D model data, technical parameters and test reports, joint detailing recommendations, and project-specific seminars on topics such as AI-assisted selection, vein matching and composite panel applications.

Follow our "News & Insights" section and the "Stone Library & Wiki": the former covers industry trends, technical analysis and company developments; the latter offers selection guides, standard quick references (EN/ASTM/GB/JIS cross-reference), care manuals and downloadable technical files.

We respond to enquiries within 24 hours. With drawings or schedules provided, preliminary selection advice and a budget range usually follow within 1–3 working days. Complex projects can be booked into an online meeting or a visit to our selection center.

Visits are welcome by appointment. We can arrange site tours of our production base, selection center and warehouse campus to view slabs, fabrication and inspection in person; a verifiable project list for our 1,000+ case studies is available. Overseas clients may substitute digital remote inspection and VR stone selection.

We handle customer information in accordance with the Personal Data (Privacy) Ordinance and applicable law, using it only for business communication and contract performance, and never selling or sharing it with third parties. See the website's privacy policy and terms of use for details.

Mark your enquiry "urgent" and include project location, program and key milestones. We activate a fast-track path: priority selection and quotation, expedited production coordination, dedicated logistics follow-up and alternative stone options to reduce program risk.

Submit a requirements form under "Contact Us" on our website, email us, or call the Hong Kong head office. WhatsApp is also available. Please include project background, preferred stone types, quantities and lead time requirements so we can respond precisely.

From the date of passing delivery acceptance; warranty details for installation services follow the contract. Non-human-caused damage within the warranty period is remedied free of charge; after the warranty period, parts are supplied at cost with priority production.

Free replacement within the warranty period for non-human-caused damage; transport breakage is replaced free of charge against layout numbering; after the warranty period, pieces are supplied at cost with priority production, ensuring color consistency with the original batch (the project's sealed spare stone is used first).

The main service channel follows the contracting entity, and requirements of other roles are coordinated internally by your project manager — you deal with a single contact who has the full resources of all four channels behind them.

Quality standards are entirely identical; pricing structures are designed around each role — designers by craft grade, contractors by volume tier, traders by container efficiency. Whichever channel you take, the 68-point QC system and batch color-locking standards are the same.

Yes. Channels are a division of service, not a barrier — contact us directly with your requirements and the system will assign the best-matched project manager to you.

For architects, contractors, developers and traders we run four independent service channels: designers enjoy 48-hour sample delivery, BIM/CAD detailing and joint-matching layout drawings; contractors enjoy 5,000㎡+ Hong Kong stock and phased supply by program; developers enjoy full tender support and framework price-locking; traders enjoy tiered wholesale pricing and one-stop export documentation. All four share the same 68-point QC system and batch color-locking standards — different services, identical quality.