Ordering sanitary ware by the container is a trust exercise disguised as a purchase. The fixture looks fine in a photo and may look fine on arrival — the failures show up in month six. This checklist covers what a controlled supply looks like for artificial stone (solid surface) pedestal sinks, and the questions that separate a supplier who controls production from one who is guessing alongside you.
The supply model, stated plainly
We are a factory-direct supplier, not a reseller of unknown origin. We hold reserved casting capacity at a partner facility in Guangdong, China, and our own QC team is on site, inspecting every unit before crating. We accept third-party inspection (SGS, BV, or TÜV) before shipment.
Stating that plainly matters: a straight answer about who controls the mould and the line tells you more than a logo on the crate.
What the material spec should say
For solid surface sanitary ware in China, the relevant standard is JC/T 2116-2012, which classifies the product as non-ceramic sanitary ware. A credible spec line reads:
Material: solid surface (artificial stone), non-ceramic sanitary ware, compliant with JC/T 2116-2012.
Independent testing against that standard gives you the numbers that actually predict field performance:
| Property | Typical result | Why it matters |
|---|---|---|
| Water absorption | 0.1% (limit 0.5%) | Lower means stains and bacteria do not soak in |
| Barcol hardness | 46 | Surface resistance to indentation |
| Raw material (resin) | Compliant with EU RoHS per SGS report SZXEC23002470101 | Covers the resin only, not the finished product |
Be precise about the SGS report: it covers the unsaturated polyester resin raw material, not the finished basin. A supplier who implies a finished-product RoHS certificate from a raw-material report is misstating the evidence.
Certification status: do not let anyone round the corner
We do not currently hold cUPC or CE. If a project needs them, the honest statement is: in progress, test report available. We will not show you a certificate number we do not have.
Write the compliance line as "cUPC / CE: in progress" on any spec where it appears. A buyer who needs a certified basin should confirm the certificate is issued before the bid is awarded, not after.
The on-site QC checklist
Before you commit to a volume order, verify the inspection step exists and is documented:
- Per-unit inspection at the partner facility, before crating.
- Dimensional check against the production drawing for the specific model.
- Surface check for voids, crazing, and color consistency within a batch.
- Drain and mounting-hole verification against the spec (our basins use a 45 mm drain).
- Pre-loading inspection available by third party on request.
If a supplier cannot describe their inspection step, assume there isn't one that matters.
Questions to paste into your RFQ
These mirror the questions we ask of ourselves, and the answers should be concrete:
- Which standard does the material comply with?
- Can you show the water-absorption test report (not just a claim)?
- Who inspects the unit before it is crated — and can I see the record?
- Do you accept third-party inspection before shipment?
- What is the certification status of cUPC / CE, stated exactly?
- What is the real lead time from confirmed order to crated goods?
We answer all six openly. A supplier who dodges any of them is telling you where the risk lives.
The bottom line
Quality control for solid surface pedestal sinks is mostly about visibility: a named standard, a real test report, an on-site inspection step, and an honest certification status. Get those four in writing and the basin you receive is the basin you specified.