Hebei Rongyan Building Materials Co., Ltd. mainly produces UPVC colored shells, fittings, elbows, and tees. It is a professional new technology and material enterprise that provides a series of non-metallic composite insulation and external protection products (smooth, weather resistant, corrosion resistant, and flame retardant) for colored shells. It is a resource-saving and environmentally friendly service-oriented enterprise with advanced equipment and scientific management mode, committed to the research of external protection materials for pipeline insulation, We are a company that provides insulation and external protection for insulation systems,