EU Trademark Classification EU35 Advertising and business 商业信息和研究服务（56504） Class 35 商业信息和研究服务 56504 Chinese 商业信息和研究服务 English Business information and research services Site ref. 56504 Class 35 Included in Harmonised Database (HDB), TM5 ID List, WIPO Madrid Goods and Services (MGS)