Metal & Mining
| Mon 31 Aug 2026
Beijing, Aug. 31 -- Sinohydro Engineering Bureau 5 has been awarded a patent for Auxiliary Protection Device for Blast Hole Opening. This invention was developed by Zheng Youhua, Zou Yan, Zhang Xin, Ding Zhongyu, Chen Du, Zhang Xiaodong, Song Zuoyong, Wang Bailong, Jiang Muhua and Tang Zhenqi.
The patent application number is C..