... ,its ignition point in 2700'c Specification:Raw material: Magnesium oxide , magnesium chloride ,fiber glass ,perlite ,wood fiber etc . ... :confirming to GB6566-2001 A-Class.Specifications:Raw material:Magnesium oxide , magnesium chloride ,fiber glass ,perlite ,wood fiber etc . ... heat preservation ,3,Environmental protection: It is totally 100%green boards4, Easy to install : It can be treated in ...