Weifang Zhongyun Science and Research Co., Ltd. is a wholly-owned subsidiary of Zhongyun Group, it can provide customers with comprehensive technology and solutions for the production of plastic pipes. Its current main scope of business is developing and manufacturing series of PE/PP/PVC double wall corrugated pipe production line which can be used to produce PE/PP/PVC double wall corrugated pipes with diameter from 50mm to 2,400mm, series of PE/PP/PVC solid wall pipe production line which can be used to produce PE/PP/PVC solid wall pipes with diameter from 16mm to 1,600mm, as well as other plastic pipe production line. Zhongyun Group is a large enterprise group with more than forty years’ history, and currently involved in the development and manufacture of both plastic pipe processing equipments and large sized wind generators, precision casting, investments, etc. Thereamong, in the field of plastic pipe processing equipments, Zhongyun Group, by virtue of advanced technical solutions and superior quality of products, has won an extremely high reputation and extensive supports in plastic machinery industry of China. Zhongyun Group is the one and only holder of “Chinese well-known trademark” at present in plastic machinery industry of China.

　　Depending on the rich experience and powerful strength of Zhongyun Group in the sphere of plastic pipe processing equipment, Zhongyun Science and Research Co., Ltd. has been taking the lead in making breakthroughs continuously on both production technology and equipment for the double wall corrugated plastic pipes through constantly investing in the research and development of new products and technical innovations. Today, Zhongyun Group has been the principal supplier of double wall corrugated pipe equipment both in China and all over the world.