EU Trademark Classification EU01 Chemicals 液体缓冲剂（3537） Class 01 液体缓冲剂 3537 Chinese 液体缓冲剂 English Liquid buffers Site ref. 3537 Class 01 Included in Harmonised Database (HDB), Nice Alphabetical List, TM5 ID List, WIPO Madrid Goods and Services (MGS)