EU Trademark Classification EU11 Lighting, heating and air conditioning 玻璃内置供暖设施（29579） Class 11 Heating installations incorporated in glass 29579 玻璃内置供暖设施 Chinese 玻璃内置供暖设施 English Heating installations incorporated in glass Site ref. 29579 Class 11 Included in Harmonised Database (HDB)