... density , heat-preventing. 2. Fireproof, waterproof, quakeproof. Fireproofing Calcium silicate panel is :1: High density , heat-preventing.2. Fireproof, waterproof, quakeproof ... strength of screw: >=95.4N/mmFlexural strengh : >=19MpaApplications:Interior and exterior wall partition, suspended ceiling , fireproof board .Also can be used ...