EU Trademark Classification EU19 Building materials 预成型混凝土建筑构件（40439） Class 19 预成型混凝土建筑构件 40439 Chinese 预成型混凝土建筑构件 English Preformed concrete building elements Site ref. 40439 Class 19 Included in Harmonised Database (HDB), Nice Alphabetical List, WIPO Madrid Goods and Services (MGS)