EU Trademark Classification EU19 Building materials 隔热玻璃（建筑用）（39905） Class 19 隔热玻璃（建筑用） 39905 Chinese 隔热玻璃（建筑用） English Insulating glass [building] Site ref. 39905 Class 19 Included in Harmonised Database (HDB), Nice Alphabetical List, WIPO Madrid Goods and Services (MGS)