exterior wall material 1.Excellent Sound,heat insulation 2.Easy to work, fix and decorat 3.Non-Formadehyde,non-toxic Hubei Qingyang Green Building Material Co.,Ltd Yi De Glass Magnesium Oxide Board FactoryProduct Name:exterior wall materialMain Feature:1.Excellent Sound insulation2.Easy to work, fix and decorat3.Non-Formadehyde,don't contain any toxic ,asbestos4. Partition Material,Good surface ...