EU Trademark Classification EU01 Chemicals 乙二醛反应剂（3315） Class 01 乙二醛反应剂 3315 Chinese 乙二醛反应剂 English Glyoxal reactants Site ref. 3315 Class 01 Included in Harmonised Database (HDB), Nice Alphabetical List, WIPO Madrid Goods and Services (MGS)