EU Trademark Classification EU01 Chemicals 用于水处理的碳酸镁（3555） Class 01 Magnesium carbonate for use in water treatment 3555 用于水处理的碳酸镁 Chinese 用于水处理的碳酸镁 English Magnesium carbonate for use in water treatment Site ref. 3555 Class 01 Included in Harmonised Database (HDB)