... resistance, 100% asbestos free Magnesium oxide board(or fireproof board, mgo board, magnesium fireproof board) acts in the manner like combination ... thickness from 2mm to 35mm. Magnesium oxide board is lightweight, flexible, excellent secondary processing as the ... resistant, environment-friendly as the inorganic boards. Magnesium oxide board is widely used for hanging roofs, partitions, fire doors ...