... 2700'c Specification:Raw material: Magnesium oxide , magnesium chloride ,fiber glass ,perlite ,wood fiber etc .Incombustible: A Grade, GB8624Fire resistance :incombustibility ... ,heat insulation and preservation structures ,sign boards ,fireproof partition walls,low fencing partitions .fireproof pipeline ,fireproof doors cornice baffle boards, public restroom dividers baseboards ...