Tianjin rock abundance Seiki Co., Ltd. (www.tianjinyf.com) located in Tianjin Jinghai County Economic Development Zone, is specialized in the design development and manufacture of spiral welded pipe production line equipment, pipe hydrostatic testing machine, flat head chamfering machine equipment and finishing area equipment, prestressing strand equipment, PC rod production equipment of high-tech enterprises. Yan Feng has strong technical force, more than a professor-level senior engineer, senior technicians and engineers titles accounted for more than 50% of the total number of companies. Yan Feng has a strong R & D and manufacturing capabilities supporting, and bear the "turnkey" projects. Has successfully provided more than 200 sets of spiral welded pipe production line to the user since 99 years. And radiation to nearly 20 domestic provinces and cities. Product implementation API, GB standard. Yan Feng and other enterprises jointly run: Tianjin iron abundance of prestressing strand Limited; Wudi Heavy Steel Pipe Co., North Sea. Yan Feng high-tech companies at home and abroad as a breakthrough in the conversion to absorb large amounts of domestic and foreign high-tech, research and development of advanced technology products, compact, short development cycle, fast return on investment. Rock abundance of corporate policy is: sophisticated technology, high-quality products, improve customer service return. Yan Feng products will bring opportunities for your business, and create efficiency. Yan Feng is your most loyal friend, rock abundance will help you create a more brilliant performance.