Shanghai Erqi industry and Trade Co., Ltd. has established a service network in conjunction with Hubei Wuhan yinpu, Fujian Chuangxing, Guangzhou Yongchuang and Sichuan green concrete, and has set up a special concrete department, a wharf track accessories department and a stone Department. Production and sales of iron sand concrete, anti radiation mortar, prefabricated counterweight, flexible track fastening system, granite stone.