... magnesium oxide board: 1.Vogue fireproof board 2.heat insulation, sound insulation, 3.easy to install magnesium oxide board: Water proofThe ... room, schools, public area, the movie theater, the train, the bus, the boat and the subway, the shopping center, it is ... a non-flammability 1-class materialPC room, karaoke room and movie theater, subway etc.OSB SubstitutionThe Magnesium board which is substitute ...