... :Raw material: Magnesium oxide , magnesium chloride ,fiber glass ,perlite ,wood fiber etc .Incombustible: A Grade, ... .Specifications:Raw material:Magnesium oxide , magnesium chloride ,fiber glass ,perlite ,wood fiber etc .Incombustible: A Grade, ... used primarily as fireproof materials for walls and ceiling in office building,apartmentcomplexes ,residential constructions ,hotels ,theatres ,restaurants ...