Transportation
| Wed 21 Oct 2026
Beijing, Oct. 21 -- State Intellectual Property Office of China has awarded a patent to Xian Xijiao Municipal Facilities Maintenance Man Co Ltd for Pressure Pipeline Transportation Device in Casing Pipe. Bu Long, Tian Long, Sun Biao, Wang Sijie, Zhou Long, Cheng Yang, Wu Tingyan, Yan Qingqing, Ji Cunhui, Deng Wan, Yang Qingde, A..