Which company in Xiamen South Asia has better pvc pipes? What is the strength?

As far as I know, the following manufacturers of pvc pipes in South Asia in Xiamen are relatively good, and their product prices are relatively low: 1, Xiamen Qiyuan Plastic Pipe Valve Co., Ltd. 2, Xiamen Fuze Water Heating Business Department 3, and Xiamen Zouping Tengda Plastic Products Co., Ltd. You can learn more about it, and I hope my answer will be helpful to you.