... to install 4.Low thermal insulation Insulation board fireproof material calcium silicate board ceiling board JRCSB92Physical Properties CommodityCalcium Silicate BoardBrand nameJINRUANModelJRCSB92ColorLight gray ... proof, sound insulation, heat insulation, thermal insulation,anti-shock,anti-impact,anti-aging,corrosion-resistang,anti-pests,easy processing, stable performance. Product ApplicationWidely ...