1. smooth appearance 2. light weight 3. fireproof and windproof 4. sound insulation and heat insulation This product is our main product. The ... to resist earthquake, wind, fire, anticorrosion, rainstorm. 2. sound insulation and sound insulation. 3. easly construct, can be used circulatly. 4 ... also used on prefabicated house, toilet, villa, engine room movable fence and so on.