振华科技：公司旗下东莞市振华新能源科技有限公司主要从事锂离子电池研制、生产、销售业务

Group 1 - The core viewpoint of the article is that Zhuhai Technology (振华科技) is actively advancing the research and development of solid-state battery products through its subsidiary Dongguan Zhuhai New Energy Technology Co., Ltd. [1] Group 2 - The company primarily engages in the research, production, and sales of lithium-ion batteries [1]