EU Trademark Classification EU11 Lighting, heating and air conditioning 通风设备用烟道（29278） Class 11 通风设备用烟道 29278 Chinese 通风设备用烟道 English Flues for ventilating apparatus Site ref. 29278 Class 11 Included in Harmonised Database (HDB), Nice Alphabetical List, WIPO Madrid Goods and Services (MGS)