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| Fri 01 May 2026
Beijing, May 2 -- State Grid Shandong Electric Power Company Dongying City Dongying Distr Power Supply Company has filed a patent application for High-altitude Equipment Signboard Mounting Device and Using Method Thereof. This invention was developed by Zhang Shengtang, Hu Shijin, Zhang Xindong, Nie Jianfeng, Zhang Jiyang, Li De..