GENEVA, Dec. 8 -- QINGHAI POWER TRANSMISSION & TRANSFORMATION ENGINEERING CO., LTD. (No. 25 Xiguan Street, Chengxi DistrictXining, Qinghai 810008), 青海送变电工程有限公司 (中国青海省西宁市城西区西关大街25号), STATE GRID QINGHAI ELECTRIC POWER COMPANY (No.89 Shengli Road, Chengxi DistrictXining, Qinghai 810000), 国网青海省电力公司 (中国青海省西宁市城西区胜利路89号) filed a patent application (PCT/CN2024/132987) for "POLE ERECTING DEVICE FOR ...