(1) Fire-proofing (2) Waterproof & Moisture-proofing (3) Heat insulation & sound-isolation (4) 100% free from asbestos Product Specification Main Materials and work flow:Calcium Silicate Board is mainly made from cement, quartz sand and reinforced fiber through the process of slurring, forming, high pressure steam curing, drying, surfacing, cutting, packing etc. Key features:100% free from ...