HANGZHOU RIYANG PIPE WELDING MACHINERY Co., Ltd is the leading enterprise in China specializing in research, development and production of pipe jointing equipments, and also one of the enterprises with national standards. With the favourable processing advantages of Yangtze Delta and the incorporation of each other\'s advantaged technology enable us to focus on the breakthrough in the field of plastic pipe welding equipment and form a production, supply, sell and after-sales service one-stop s