EU Trademark Classification EU06 Metal goods 金属通风管道（13647） Class 06 Ventilating ducts of metal 13647 金属通风管道 Chinese 金属通风管道 English Ventilating ducts of metal Site ref. 13647 Class 06 Included in Harmonised Database (HDB), TM5 ID List, WIPO Madrid Goods and Services (MGS)