... It can be used as roof panel of workshop, factory, prefabricated home, storage, villa and so ... Most sound-insulation Best hanging force Most anti-seismic and impact resistance Largest span ... inner wall panel 75 and 120mm it will increase 12m practical area, for 100m2 house, it ... Huahong Steel Structure Engineering Co., Ltd.Country/Territory: China (Mainland)Add: 66, Changsheng Road, Changle District ...