... cloth, perlite (Without : asbestos, formaldehyde, benzene) Appl Materials: magnesium chloride, magnesia, alkali endured epoxy cloth, perlite (Without : asbestos, formaldehyde, benzene)Application ... plate in fireproof gate and packaging of equipment cases.The board features being green, free from smell and poison, non- ... such harmful elements as asbestos, formaldehyde or benzene. magnesium oxide board