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| PORCELAIN TILE TECHNICAL PARAMETER | |||
| Tested features | Chinese standard | European standard | Progres standard |
| Water absorption | ≤0.5% | ≤3.0% | ≤0.16% |
| Dimensional variation length and width | ±0.5% | ±0.6% | ±0.3% |
| Thickness | ±5% | ±5% | ±3% |
| Warpage | ±0.3% | ±0.5% | ±0.2% |
| Wedging | ±0.3% | ±0.6% | ±0.2% |
| Linearity | ±0.3% | ±0.5% | ±0.2% |
| Flatness | ±0.3% | ±0.5% | ±0.2% |
| (n/mm2) modulus of rupture | ≥35 | ≥35 | ≥38 |
| (N) bending strength | ≥1300 | ≥1300 | ≥2272.5 |
| scratch resistance | ≤175mm3 | ≤175mm3 | ≤150mm3 |
| (MK-1) thermal expansion coefficient | / | ≤9 | ≤6 |
| resistance to thermal shock | no crazing and peeling on the glazed surface after crazing test | no crazing and peeling on the glazed surface after crazing test | no crazing and peeling on the glazed surface after crazing test |
| chemical resistance | not less than UB | not less than UB | UA |
| anti freezing | no crazing and peeling on the glazed surface after crazing test | no crazing and peeling on the glazed surface after crazing test | no crazing and peeling on the glazed surface after crazing test |
| glossiness | ≥55 | ≥55 | ≥55 |
glazed tiles