... 2. Fireproof, waterproof, quakeproof. Detailed Product Description :Fireproofing Calcium silicate panel is :1: High density , heat-preventing.2. Fireproof, ... after a long time.4) Sound proof : Reduce indoor noise .5) Environmental protection : its special characters ... suspended ceiling , fireproof board .Also can be used for: Commercial and industrial construction, residential building, movie theaters ...