宏鑫科技：主营业务为汽车锻造铝合金车轮的研发、设计、制造和销售

Group 1 - The company, Hongxin Technology (301539), focuses on the research, design, manufacturing, and sales of forged aluminum alloy wheels for automobiles [1] - The main products of the company include forged aluminum alloy wheels for commercial vehicles and passenger vehicles [1]