Redefine your kitchen experience
Our handmade sinks are created by experienced craftsmen, and each piece is a unique work of art.






| Metric | JSD Engineering Benchmarks | Industry Baseline | Tool / Verification |
|---|---|---|---|
| Material Gauge | 0.6mm to 1.5mm (16/18 Gauge) True Positive Gauge (SUS304 / SUS316) | Negative tolerance (-0.1mm) | Spectrometer + 0.001mm Digital Micrometer |
| Rim Flatness | ≤0.8mm diagonal deviation (Zero edge gap) | 1.5mm–2.5mm (causes leaks) | Precision Granite Plate + Feeler Gauge 100% Check |
| Drainage Slope | Press-engineered 2.5°~3.0° slope + X-grooves | Flat base causing standing puddles | 100% Live water fill & 15-second drain test |
| PVD Finish | 5-Year Warranty, 72-Hour NSS Salt Spray Certified | <24h Salt spray (color peels) | D65 Light Box + X-Rite Spectrophotometer (ΔE ≤ 0.8) |
| Ledge Straightness | Ledge straightness deviation ≤0.5mm | Uneven bends causing loose accessory fit | 100% Physical accessory fit inspection |
| Drain Hole | ±0.3mm concentricity, burr-free drawn collar | Burred edges causing gasket leaks | Go/No-Go plug gauge + Strainer lock-up trial |