Adhering into the principle of "quality, provider, performance and growth", we now have gained trusts and praises from domestic and intercontinental consumer for square howllow section of mild steel YuantaiDerun, Water Pipe to Spa , Steel Tube Pipe Sizes , Gi Steel Round Pipes ,Square Pipe Best-Selling . Our Lab now is "National Lab of diesel engine turbo technology " , and we own a professional R&D team and complete testing facility. The product will supply to all over the world, such as Europe, America, Australia,Suriname , San Francisco ,Germany , Amman.We have more than 10 years experience of production and export business. We always develop and design kinds of novel products to meet the market demand and help the guests continuously by updating our products. We are specialized manufacturer and exporter in China. Wherever you are, please join us, and together we will shape a bright future in your business field!