GENEVA, April 5 -- LANGFANG SOL-BRIGHT NEW ENERGY TECHNOLOGY CO., LTD (Ruizhi Mechanical and Electronic Yard, High And New Tech Development Zone, Hui Autonomous County of DachangLangfang, Hebei 065000), 廊坊思拓新能源科技有限公司 (中国河北省廊坊市大厂回族自治县高新技术产业开发区工业二路北侧、福喜一路东侧睿智机电院内) filed a patent application (PCT/CN2023/143203) for "POSITIONING METHOD FOR PHOTOVOLTAIC CLEANIN...