... Specification: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, ... heat insulation and preservation structures ,sign boards ,fireproof partition walls,low fencing partitions .fireproof pipeline ,fireproof doors ...