HENGSHENG MARBLE S&T CO. LIMITED's SFH-3 nano-protection builds a 5–8 nanometre dense barrier directly on natural stone, raising stain resistance eightfold while preserving the surface's original gloss and breathability. Co-developed with Tsinghua University and validated over 18 months on landmark projects including the M+ Museum and NEOM, the technology reached end users in 2021 as an easy-to-use retail spray.
SFH-3 forms a 5–8 nm dense barrier via a graded siloxane–fluorocarbon composite. Contact angle exceeds 115°, resistance to coffee, wine and oils improves 8-fold, and the stone keeps its original gloss and breathability.
Validated on the M+ Museum and NEOM projects over 18 months, the technology reaches consumers in 2021 as a retail spray — bringing laboratory-grade stone care to every end user.
Three years of research, one nano-scale film — HENGSHENG MARBLE S&T CO. LIMITED and Tsinghua are making 'stone stains' a thing of the past.
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