蔚蓝锂芯：金属物流业务是公司成立以来一直从事的业务

Group 1 - The core viewpoint of the article is that the metal logistics business of Weilan Lithium is stable and has consistently contributed profits to the company since its establishment, despite fluctuations in metal prices this year [2]. Group 2 - The metal logistics business involves steel and aluminum plates, which have not significantly impacted the company's operations due to price volatility [2].