EU Trademark Classification EU19 Building materials 含液晶膜的夹层建筑玻璃（39943） Class 19 含液晶膜的夹层建筑玻璃 39943 Chinese 含液晶膜的夹层建筑玻璃 English Laminated building glass incorporating a liquid crystal film Site ref. 39943 Class 19 Included in Harmonised Database (HDB)