... density , heat-preventing. 2. Fireproof, waterproof, quakeproof. Fireproofing Calcium silicate panel is :1: High density , heat-preventing.2. Fireproof, waterproof, quakeproof ... .17%Shrinkage rate: <0.08%(GB/T7019-1997)Radioactivity: In line with the standard, A-class product, no pollution in production ...