Guangzhou Sunzo Engineering Material Co., Ltd is a professional manufacturer for prefabricated vertical drain(pvds)with strong production capability. Our output for vertical drains reaches as much as 500, 000 m/day. We are able to manufacture different plastic drains according to the specifications of the clients, as well as measurable prefabricated drains (with copper wire or scale). We strictly follow the standard instructions of JTJ/T257-96 and JT/T521-2004, which made by Ministry of Transport of the People's Republic of China, during the production, so as to guarantee the quality of the products. We have acquired the ISO9001: 2000 quality management system and many other quality certificates.
