Hebei Kunzan Plastic Products Co., Ltd. is a private enterprise . After years of development, now we are one of the biggest professional manufacturers of plastic pipes and fittings in China. Meanwhile we have experienced and reliable teams for production, research, sales and after sales. Our annual sales grow rapidly every year. Kunzan's products applies the internationally advanced production technology to produce PE pipes, PVC pipes, PE-RT pipes, PP-R pipes, HDPE protection pipes, M-PP ...