... It is a kind of new green and environmental protection board with fireproof and moisture resistant ability. Xinghe fireproofing magnesium oxide ... no deformation,good tenacity.5. Heat insulation,sound insulation,the index of the sound insulation has reached 50dB. This kind ... it is the ideal replacement material of wood board,gypsum board and calcium silicate board.1.Fire-proof,water-proof,aging-proof, ...