| Specification | Details |
|---|---|
| Structure | Needle-punched structure GCCM-S |
| Mass per Unit Area | Not less than 95% of specified value (3kg-20kg/m²) |
| Thickness After Hardening | 6mm (7kg/m²), 8mm (10kg/m²), 10mm (12kg/m²), 12mm (15kg/m²), 15mm (20kg/m²) |
| Length Tolerance | ≥ -2% |
| Width Tolerance | ± 3% |