Which Chinese standard applies to engineered stone?
The figures, and where each one comes from
| Item | What is published | Source |
|---|---|---|
| The standard in force | GB/T 35157-2017, Resin-based Engineered Stone Slabs (the Chinese title names the resin) | China Stone Association, via trade press |
| What it covered | resin-bound products only | Yunfu municipal quality bureau |
| What it did not cover | cement-based engineered stone had no national standard of its own | Yunfu municipal quality bureau; Baidu Baike |
| The gap, in the drafting body's words | the industry problem named in the programme is inconsistent naming: the same material went by different names, with no single document to settle it | Yunfu municipal quality bureau |
| The revision plan number | 20253872-T-609 | National standardisation administration, via Baidu Baike and Yunfu municipal quality bureau |
| When it was approved | August 2025, by the national standardisation administration; a 16-month plan period | Yunfu municipal quality bureau; Baidu Baike |
| What it is renamed to | Engineered Stone Slabs — the resin qualifier is gone from the title | National standardisation administration, via Baidu Baike |
| What that rename means | cement-based engineered stone is inside the scope of a national standard for the first time | Yunfu municipal quality bureau; trade report |
| First drafting unit | Guangdong Yunfu Quality and Metrology Supervision and Inspection Institute, host of the National Stone Quality Inspection and Testing Center (Guangdong) | Yunfu municipal quality bureau; trade report |
| Co-drafting bodies | the China Stone Association, and Sinoma Advanced Materials' synthetic crystal institute | Yunfu municipal quality bureau; trade report |
| ⛔ Not a company standard | none of the three drafting bodies is a manufacturer; this is a government standards programme | derived from the three rows above |
| Started | 18 October 2025, at the Yunfu International Stone Fair | Yunfu municipal quality bureau |
| Latest milestone | the Xiamen revision seminar, where 28 experts and firms produced 13 key amendments | trade report, April 2026 |
| Amendment direction, materials | resin to comply with the updated GB/T 24264, plus dedicated technical requirements for inorganic cement | trade report, April 2026 |
| Amendment direction, classification | classified by aggregate and particle type, and building slabs separated from counter-top panels on thickness tolerance | trade report, April 2026 |
| Amendment direction, testing | stain resistance, gloss, drop-ball impact, fire performance declarations and Mohs hardness | trade report, April 2026 |
| The 2026 technical survey | the drafting centre visited Foshan, Dongguan and Shenzhen, collecting cement-based process parameters and application data | Yunfu municipal quality bureau |
| What existed before, for cement material | a Guangdong local standard, DB44/T 1601-2015 for inorganic engineered stone slabs, plus three association rules, T/CSBZ 009, 010 and 011 | Baidu Baike entry for engineered stone |
| The related acceptance standard | JC/T 2300-2014, the industry acceptance code for processing, decoration and installation of engineered stone | Baidu Baike entry for engineered stone |
| The earlier industry standard | JC/T 908-2013, the industry standard that defined the terms and the classification | Baidu Baike entry for engineered stone |
| ⛔ What is NOT published yet | no published limit values from the draft. This page prints the programme, not the numbers | derived from the draft status above |
| ⛔ What we hold | nothing. We hold no certificate against GB/T 35157 or any other national standard | our own position, stated |
| ⛔ The trap to avoid | a datasheet quoting "GB/T 35157" without saying which year, which binder type, or which product class, is not a specification | derived from the rows above |
| The question to ask a supplier | which year of which standard, met for which binder type, on which product class, and tested by whom | derived from the rows above |
Why the processes are not interchangeable
A standard is not paperwork for its own sake; it is the thing two buyers point at when they disagree. If your product is resin-bound, the 2017 document gives you published limits for density, flexural strength, water absorption and radioactivity. If your product is cement-bound — a poured floor, a precast panel, a cement-bound tile — then until this revision lands you are relying on local standards, on association rules, or on the supplier, and the first two of those three are weaker than a national standard and the third is not independent. None of that makes cement engineered stone a bad choice. It is widely used and for a poured or precast floor it is usually the right binder. It means the buyer should ask which document is being met, not whether the material is good.
What these figures are, and what they are not
Every item below is a published fact about a national standards programme, sourced to a government page or a trade report. It is not a statement that we hold any certificate — we hold none — and it is not a claim that any particular product meets the draft. The standard is under revision; a draft is not a standard until it is published. Where the drafting programme has not published a value, this page says so rather than filling the gap.
If you are specifying this
We have not published products against this question yet. Send us the process, thickness and quantity and we will quote it against what we can actually form, rather than against a catalogue.