Gu Chang outlined in ductile iron foundry with your anti-theft covers: 1, bolt hole blocking technique method. Bolts, nuts blocked the hook hole, but as long as a bowed head at both ends of the wire, inserted into two grooves under the bolt head inside, you can open and took the covers; 2, lock key method . 3, fork joint linkage method. Gu Chang foundry located in Inoue's hometown - Kim Gu treasure. Shanxi Jinzhong City, Shanxi Taigu State Road 108 covers diameter, malleable Hu Village Industrial Park, east of long high-speed, high-speed transportation Northern Qi Tongyu convenient and accessible. The main application areas Gu Chang annual production of ductile iron foundry covers: the municipal roads, highways, communications Shanxi covers casting, electricity, water, community, school, and other parks. I plant was built in 2006 in Shanxi covers wholesale, continuous efforts since the plant grow, is to become a professional production of various ductile iron manhole covers business, the annual production capacity of 5,000 tons, with an annual output of 10,000 tons is being expanded. Address: Taigu County, State Road 108 towns Hu Dong village crossing. Shanxi covers size, Chang-year foundry (certified), Shanxi Taigu covers provided by Chang in foundry. Gu Chang-year foundry (www.sxcnzz.com) is Jinzhong, machining leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Chang-year leadership in the foundry staff warmly welcome all inquiries negotiations to create Chang foundry in a better future.