... 18580-2001PropertyUnitSpec. (mm)12-19Densitykg /m3≥720Thickness Tolerancemm.±0.15Size Tolerancemm/m±2Internal Bonding(Average)MPa0.55Moisture Content%4 ... discoloration, acid resistance, fireproof, low formaldehyde content, suit for interior decoration's material.Flooring: symmetrical density, strong stabl ... , smooth rabbet,good stabl measure, can suit for lockstyle floor's material. MDF Fibreboards ...