We have cooperation with many large construction groups of the Chinese government. We have cooperated with domestic China Railway Group, China Railway Construction Group, China Communications Construction Group, China power Construction Group, China Construction Group and other state-owned large-scale engineering groups, Gansu Luqiao Group, Ningxia Luqiao Group, and shan xi Construction. The Group, Beijing Urban Construction Group, Jiangsu Transportation Engineering Group, Zhejiang Jiaogong Group, Hangzhou Traffic Engineering Group and other provinces and regions have established mang pleasant cooperation, and has successfully provided a satisfaction solution to the site of steel processing in Russia, Kuwait, Saudi Arabia, Iraq, Ethiopia, Kenya, India, Sir Lanka and so on.