... &waterproof &Heat insulation Light acoustic XPS wall 1 Application :UBS Sandwich wall panel EPSapply to a villa ,an ... ,Apartment ,Indoor Stadium ,Exhibition Center . 2 Composition :Sandwich wall panel EPS is with magnesium oxide board as facial surface ... within 2 weeks .4 .eco-friendly =Non-toxic, no odor, non-polluting, non-radiation,non-formaldehyde5 .fireproof =fireproof performante better than ...