久日新材：参股公司正在进行固态电池相关方面的研发

Group 1 - The core point of the article is that Jiuri New Materials (688199.SH) has announced that its affiliated company, Tianjin Plana Nano Technology Co., Ltd., is conducting research and development related to solid-state batteries [1] Group 2 - The company is actively involved in the emerging field of solid-state battery technology, which is significant for advancements in energy storage solutions [1]