A股铝概念股午后走强，闽发铝业涨停，中色股份、天山铝业、焦作万方、中国铝业、中孚实业涨超5%。消息面上，氧化铝主力合约一度涨8%，报3375元/吨。

Group 1 - The A-share aluminum concept stocks strengthened in the afternoon, with Minfa Aluminum hitting the daily limit, and companies like China Nonferrous Metal Industry, Tianshan Aluminum, Jiaozuo Wanfang, China Aluminum, and Zhongfu Industrial rising over 5% [1] - The main contract for alumina rose by 8%, reaching 3375 yuan per ton [1]