Main Characteristics: 1.Base Material:Mgo Board 2.Bending strength:15Mpa (GB/T7019-1997) 3.Density:0.8-1.1g/cm3 (GB/T7019-1997 4.Absorbing water rate 15% (JC688-1998) 5.Fireproof characteristic:A grade not combustible (GB8624-1997) no combustible (BS476 Part4) 6.Thermal resistance:1.14m2K/W (GB/T13475-92) 7.Radioactivity:Not limited by the scope of application (GB6763-2000) 8.Safe:100% does not include such harmful substances as the asbestos and etc. Main Size:603*603*5mm-9mm,595*595*5mm-9mm, 600*1200*5mm-9mm.Other size also requests. Perforation Patterns:Round,Square,Micro More: zjgmgo.com fireproof-board.com