Construction
| Wed 24 Apr 2024
Beijing, April 24 -- State Intellectual Property Office of China has awarded No. 4 Construction Eng Co Ltd of Guizhou Construction and Eng Group and Guizhou Construction and Eng Group a patent for bolt front positioning structure. Jia Wei, Wu Bin, Yao Zhigang, Sun Kai, Hu Bin, Hu Gang, Yang Zhengmao, Xiao Fuxin, Yang Lei, Ye Jia..