赛轮轮胎：公司主营业务目前聚焦于半钢胎、全钢胎以及非公路轮胎

Group 1 - The company focuses on the production of semi-steel tires, full-steel tires, and non-road tires [1] - The products are widely used in various fields including passenger cars, light trucks, large buses, freight trucks, construction machinery, and special vehicles [1]