EU Trademark Classification EU01 Chemicals 工业用硫酸镁（3623） Class 01 工业用硫酸镁 3623 Chinese 工业用硫酸镁 English Magnesium sulfate for industrial use Site ref. 3623 Class 01 Included in Harmonised Database (HDB), TM5 ID List, WIPO Madrid Goods and Services (MGS)