Beijing Baisha Building Science & Technology Co., Ltd is a high-tech company which majors in developing & producing the pre-insulated polyurethane panel and composite HVAC duct materials. With its advanced production technology and production line, it has got a stable product quality. BBS pre-insulated polyurethane panel was mostly used in external wall, HVAC duct , ventilating and heat preservation beneath floor etc.  It has been widely used in various construction projects and has got excellent reputation.