... easy to install 4.Low thermal insulation Fireproof material calcium silicate board suspended ceiling JRCSB90Physical Properties CommodityCalcium Silicate BoardBrand nameJINRUANModelJRCSB90ColorLight ... with GB8624-1997Performance Light weight, highstrengh, fier-proof, water-proof, moisture-proof, sound insulation, heat insulation, thermal insulation,anti-shock,anti-impact,anti-aging,corrosion- ...