长海股份：公司生产的玻璃纤维及制品与环氧树脂等复合，可用于电池包壳体或上盖板

Group 1 - The company, Changhai Co., Ltd. (300196.SZ), has indicated its involvement in the solid-state battery sector through its production of fiberglass and epoxy resin composites, which can be utilized for battery pack housings or covers, achieving lightweight and high-strength insulation protection [2]