NSF/ANSI 51
Certifications. Founded in Hong Kong in 1999, Hengsheng delivers traceable and auditable stone solutions built on quarry-direct sourcing, smart manufacturing and global delivery.
Core Strengths
- ISO 9001/14001/50001 systems plus CE, GREENGUARD Gold and NSF/ANSI 51 product certifications.
- Third-party endorsement from SGS, UL Environment and NSF International.
- Complete test reports and compliance documents for tenders and acceptance.
- Certification embodied in practice, from extraction through manufacturing and delivery.
Key Figures
Service Process
- Build management systems and achieve certification.
- Maintain through continuous audit.
- Participate in industry bodies and research.
- Translate certification into product and delivery.
Applications
- Tender submissions and compliance review.
- Third-party verification of quality and environmental credentials.
Sustainability & Certification
A matrix of certifications (ISO 9001/14001/50001, CE, GREENGUARD Gold, NSF/ANSI 51) underpins quality and environmental credibility.
Certification is embodied in practice — from extraction and manufacturing to delivery.
Deep Selection Guide
This capability is realised through a practical selection and delivery plan tailored to the project, backed by traceable materials, documented QC and site-specific guidance.
- Selection criteria：The certification and partnership framework keeps every batch compliant and traceable; materials can be specified against a project's required standards.
- Specification & thickness：The certification and partnership framework keeps every batch compliant and traceable; materials can be specified against a project's required standards.
- Acceptance & records：Every batch ships with test data and image records, traceable by batch code back to the quarry, with dimensional and gloss checks completed before dispatch.
- Sustainability：Green mining and circular economy form the practical basis alongside formal certification.
Hengsheng manages the full chain from quarry-direct sourcing, smart manufacturing, global delivery and on-site installation. The advantage lies not in a single product but in connecting selection, fabrication, QC and delivery into an auditable loop, giving project teams clear assurance on programme, quality and compliance.
FAQ
- How can certifications be verified?
- We provide the relevant system certificates and third-party test reports for verification.
- Do you support tender compliance?
- Yes — complete test reports and compliance documents are available.