EU Trademark Classification EU19 Building materials Slabs (Lighting -) Class 19 Slabs (Lighting -) 40638 采光板 Chinese 采光板 English Slabs (Lighting -) Site ref. 40638 Class 19 Included in Harmonised Database (HDB), Nice Alphabetical List, TM5 ID List, WIPO Madrid Goods and Services (MGS)