Metal & Mining
| Tue 27 Oct 2026
Beijing, Oct. 26 -- Hebeisijian Construction Engineering has secured a patent on Dragging and Holding Device for Nodular Cast Iron Pipe. Meng Ziheng, Xing Ailing, Li Chensong, Peng Hu, Zhang Tao, Zhang Zijun, Wang Lixiao, Cao Yingxin, Liu Yunfang, Liu Wei and Zhang Jindong developed the invention.
The patent application number ..