Hebei Tongjian Plastic Products Co., Ltd. is a modern enterprise that integrates the research and development, production, and sales of plastic pipes and fittings. The company currently has two production bases in Hebei, covering an area of over 100000 square meters, and has 100 internationally advanced production lines. Its main products include PE series, PVC series, PP-R series, M-PP power cable protective sleeve series, PE-RT series There are nearly a hundred products in six major series, including the double wall corrugated series, widely used in fields such as water supply, drainage and sewage, power communication, underfloor heating, fire protection, and agriculture. The company has an annual production capacity of over 40000 tons and is one of the strongest plastic pipe production enterprises in China.