信宇人：公司对欧盟市场的销售主要通过在欧盟国家设立子公司开展业务，该业务收入占公司整体收入比例较小

Group 1 - The company primarily conducts sales in the EU market through subsidiaries established in EU countries [1] - Revenue from the EU business accounts for a relatively small proportion of the company's overall income [1]