Each industry has its own top ten bars, such as this pipeline 1, Jinde Pipe Industry (top ten brands of well-known trademarks, brand-name products and pipe industry in China), Jinkou Pipe Industry (top ten brands of well-known trademarks, brand-name products and pipe industry in China), Jinniu Pipe Industry (top ten brands of well-known trademarks, brand-name products and pipe industry in China) and Wei Xing Pipe Industry (well-known trademarks, brand-name products and pipe industry in China). Top ten brands in brand-name products and pipeline industry) 6. Gong Yuan Pipe Industry (China Famous Trademark, China Famous Brand, Top Ten Pipe Industry Brands) 7. Rifeng Pipe Industry (Top Ten Brands of China Famous Trademarks, Famous Brand Products and Pipeline Industry) 8. There are 9 Liansu Pipe Industry (top ten brands of well-known trademarks, brand-name products and pipe industry in China). Zoje Tube (top ten brands in China's well-known trademarks, brand-name products and pipeline industry) 6544.