... , perlite (Without : asbestos, formaldehyde, benzene) Appl Materials: magnesium chloride, magnesia, alkali endured epoxy cloth, perlite (Without : asbestos ... : adoptable to partition and suspended ceiling in decoration of buildings, the structure for heat preservation sound insulation ... prevention, sandwiched plate in fireproof gate and packaging of equipment cases.The board features being green, free ...