GENEVA, April 26 -- ZHUZHOU SOUTHERN VALVE CO.,LTD (#215 Huanghe Road Tianyuan DistrictZhuzhou, Hunan 412000), 株洲南方阀门股份有限公司 (中国湖南省株洲市天元区黄河南路215号), ORIENTAL WATER VALLEY CARBON TECHNOLOGY CO., LTD. (P.O.Box 518 (NATIONAL) NO.5 HI-TECH INDUSTRLALZONE.Zhuzhou, Hunan 412000), 东方水谷碳科技有限公司 (中国湖南省株洲市开发区工业五区) filed a patent application (PCT/CN2024/135735) for "SELF-POWER-GENERA...