GENEVA, March 29 -- YUNNAN POWER GRID CO., LTD. HONGHE POWER SUPPLY BUREAU (Southwest Corner of the Intersection of Yinhe Road South Extension and Honghe Avenue, Mengzi CityHonghe, Yunnan 661100), 云南电网有限责任公司红河供电局 (中国云南省红河哈尼族彝族自治州蒙自市银河路南延段与红河大道交叉口西南角) filed a patent application (PCT/CN2025/122771) for "RAPID NON-CONTACT SENSING AND DETECTION METHOD FOR BOLT LOOSENING DEFECT IN TRANSMISSION LINE TOW...