Transportation
| Mon 10 Aug 2026
Beijing, Aug. 10 -- China Railway Guizhou Highway Construction Co Ltd has been granted a patent for Auxiliary Device for Preventing Sand Blasting Derusting End of Steel Pipe from Being Blocked. Zhu Hua, Liu Suhui, Wan Shi, Lou Liang, Zhao Yun, Chen Huihong, Liu Yunfan, Wang Chao, Zhang Lang, Qiu Xiao, Guo Xianni, Zhang Hengjun, ..