GENEVA, March 30 -- NR ELECTRIC CO., LTD. (No. 69, Suyuan Avenue, JiangningNanjing, Jiangsu 211102), 南京南瑞继保电气有限公司 (中国江苏省南京市江宁区苏源大道69号), NR ENGINEERING CO., LTD. (No. 69, Suyuan Avenue, JiangningNanjing, Jiangsu 211102), 南京南瑞继保工程技术有限公司 (中国江苏省南京市江宁区苏源大道69号) filed a patent application (PCT/CN2024/106070) for "METHOD AND APPARATUS FOR CONVERTING ...