... 2.Heat Insulation 3.Fireproof,Lightweight Indoor and Outdoor Wall Decoration Calcium Silicate Board 1.Sound absorption2.Heat Insulation3. ... , waiting room, ship’s rooms, and hospitals, etc.External Wall: Mainly used in urban multi-storey buildings and high-rise ... .Application range: ceiling, floors and roofs, partitions and external walls, fire resistant glazing smoke barriers schools, hotels, malls ...