... countries,high quality,good price,CE,UL,Interteck certificate The Magnesium Oxide Board takes magnesia material as its main material, uses alkali ... kind of new green and environmental protection board with fireproof and moisture resistant ability. Magnesium oxide board main usage: Besides it is used ... . Stable No Deformation 8. Easy Finishing 9. Environmental Protection, Nonpoisonous fire proof board