The history of our company can be traced back to the 1980’s in the factory of ‘Jin’an Foundry’, located in Xian County, Hebei Province. Over the years, we have expanded from an ordinary manhole cover manufacturer to an expert in machine tooling casting. The company has maintained a successful relationship with a wide range of western companies of Siemens since 1998 and Altendorf since 2000. Tianjin Zhengji Machinery and Equipment Co., Ltd., was established in 2005 and expanded, which introduced various kinds of precise machining equipments in the year 2010. Our products range from manhole covers, steel gratings, valves, pumps to tooling castings. Zhenyu International was founded in 2012 by the son of the owner of Jin’an Foundry, specializing in the export of the products we manufacture.