Beijing Baisha Building Science & Technology Co., Ltd is a high-tech company which majors in developing & producing the PU insulated panels and PIR sandwich HVAC duct panel and accessories. With its advanced production technology and production line, it has got a stable product quality. BBS PU insulated panels and PIR HVAC duct panel was mostly used in external wall and room surface of building, insulated core of doors, HVAC duct , ventilating and ...