EU Trademark Classification EU37 Construction and repair 管道维护建议服务（61947） Class 37 管道维护建议服务 61947 Chinese 管道维护建议服务 English Plumbing maintenance advisory services Site ref. 61947 Class 37 Included in Harmonised Database (HDB), Nice Alphabetical List, TM5 ID List, WIPO Madrid Goods and Services (MGS)