Metal & Mining
| Mon 10 Aug 2026
Beijing, Aug. 10 -- Qingdao Special Steel has obtained a patent for device for treating blockage of filter screen of drum device on line. This invention was developed by Sun Baofang, Pan Jiguo, Liu Yumeng, An Xiuwei, Lan Meng, Zheng Xiangguo, Wang Zhongwei, Wu Guicong, Wu Jiawei, An Yuzhao, Wang Shuangmin and Luo Jianbing.
Th..