天汽模：东实股份主要围绕汽车车身、底盘、动力三大系统为整车厂提供产品

Group 1 - The core viewpoint of the article highlights that Dongshi Co., Ltd. is one of the few domestic manufacturers capable of providing large-scale components for both commercial and passenger vehicles [1] - The company specializes in producing automotive parts primarily focused on three major systems: vehicle body, chassis, and powertrain, supplying products to vehicle manufacturers [1]