Education
| Tue 06 Oct 2026
Beijing, Oct. 5 -- Longda Steel Group has received a patent for Energy-saving Cold Drawing Machine for Corrosion-resistant Stainless Steel Pipe. This invention was developed by Li Guang, Xiang Nanfang, Wang Quanjian, Wu Huanghui, Huang Zefeng, Xiang Junyan, Wang Chunsheng, Li Yi and Wang Zhaoyao.
The patent application number i..