Engineering
| Sat 04 Jul 2026
Beijing, July 4 -- Henan Pinggao Electric has sought patent for Plug-in Fixed Type Annular Solder for Brazing of Vacuum Arc-extinguishing Chamber. This invention was developed by Gu Fengjuan, Zhao Fangshuai, Liu Xinyue, Zhang Guoyue, Wang Xiaohuan, Chai Yinghui, Liu Chang, Yan Hongxing, Zhang Xinguo, Guo Runtao, Gao Yang, Ma Shu..