EU Trademark Classification EU01 Chemicals 联茴香胺（2650） Class 01 Dianisidine 2650 联茴香胺 Chinese 联茴香胺 English Dianisidine Spanish Dianisidina Site ref. 2650 Class 01 Included in Harmonised Database (HDB), TM5 ID List, WIPO Madrid Goods and Services (MGS)