Mgo board with MgO,MgCL2,Perlite,Fiberglass,Chip compounds to delier a multe-purpose,versatile,non-combustible,and unique board material.This integral hard inert and paperless costruction panel has superior characteristics over panels made from gypsum,clay or wood and paper particles.So more easier,better and faster job,laminated mgo board is best for interior and exterior constrction. Data information: Fireproof:A1 grade (GB8624) Density:0.96-1.12g/cm3 (GB/T7019-1997) Intensity of bending resistance when dry:18Mpa (GB/T7019-1997) Intensity of bending resistance when moisture-saturated condition:22Mpa (GB/T7019-1997) Absorption Moisture:<15% Tensile Strength:<8-13Mpa Thermal resistance:1.14m2K/W (GB/T13475-92) Sound insulation:>44db (GBJ121-88) Security:100%no asbestos. Mgo board have been rated grade A fire-resistant by mainland China's National Center of Quality Supervision and Test of Fire Equipment. What's more,they are Light,Durable,Eco-friendly,Nontoxic,resistant to mold and mildew and they offer great insulation for both heat and sound. More:zjgmgo.com fireproof-board.com