EU Trademark Classification EU01 Chemicals 硫酸钠（4835） Class 01 Sodium sulphate 4835 硫酸钠 Chinese 硫酸钠 English Sodium sulphate Spanish sulfato de sodio Site ref. 4835 Class 01 Included in Harmonised Database (HDB), TM5 ID List, WIPO Madrid Goods and Services (MGS)