China Building Materials Co., Ltd. Xiamen Koa mainly produces and sells exclusive spa hotel PP-R pipes and fittings. HDPE same floor / siphon drainage pipes and fittings. PVC foam core drainage pipe, pipe fittings. PP quiet pipes. Plastic composite pipe, inside and outside the plastic pipe, plastic pipe, painted inside and outside the power threading pipe, plastic composite pipe and other products, please contact: 13799788443 Xiamen Koa Building Materials Co., Ltd. is a leading steel pipe Xiamen, PP- R pipe, HDPE pipe production, research and development enterprise, the company's research and development through professional production team, strong sales channels for our customers to provide quality products and construction program, allowing customers to use the full range of cost-effective and reflect the value.