EU Trademark Classification EU01 Chemicals 腐蚀性酸（2497） Class 01 Corrosive acids 2497 腐蚀性酸 Chinese 腐蚀性酸 English Corrosive acids Site ref. 2497 Class 01 Included in Harmonised Database (HDB), TM5 ID List, WIPO Madrid Goods and Services (MGS)