长海股份：关于使用闲置自有资金进行投资理财的公告

Core Points - The company announced the approval of an investment plan using idle self-owned funds amounting to no more than RMB 500 million [1] - The approved funds can be used for investment and financial management within a rolling usage framework [1] - The validity of this investment plan is set for 12 months from the date of board approval [1]