Business and Commerce
| Mon 20 Apr 2026
Beijing, April 20 -- State Intellectual Property Office of China has received Guangdong Power Grid Co Ltd Zhaoqing Power Supply Bureau patent application for Operation Ticket Execution Permission Approval Method, System, Device, Medium and Product. Lv Peijun, Mao Weilun, Zhang Jieming, Chen Minfan, Xun Jinhao, Zhang Chuansheng, ..