精华制药：孙公司鲁化森萱生产的二氧五环主要用于共聚甲醛的合成，部分用于磷酸铁锂路线一次电池的电解液

Group 1 - The core inquiry from investors is about the annual production capacity of 2,5-dimethylfuran produced by the subsidiary Luhua Senxuan and whether there are plans for production expansion [2] - Luhua Senxuan primarily uses 2,5-dimethylfuran for the synthesis of urea-formaldehyde resin, with a portion utilized in the electrolyte for lithium iron phosphate batteries, but it is currently not used in solid-state batteries [2]