EU Trademark Classification EU09 Scientific and electronic apparatus 科学用液相色谱柱（22781） Class 09 科学用液相色谱柱 22781 Chinese 科学用液相色谱柱 English Liquid chromatography columns for scientific use Site ref. 22781 Class 09 Included in Harmonised Database (HDB), WIPO Madrid Goods and Services (MGS)