Hangzhou chang Lin pipe industry co., LTD, is an production enterprises of innovation-type electrical protection products, has passed ISO9000 quality management system certification, and it is subordinated to Zhongyong Group, the registered capital of the Group is RMB eight million. With the continual production and technological improvement, Changlin established a strict scientific management system and flexible operation system gradually, and with the the large-scale development of the factory, now has sales, management, technology development and other talents, the equipments of roll machine, molding machine, mould we independently research and develop can carry on the design and production for a wide variety of products, meet the requirements of customers’ products.