EU Trademark Classification EU01 Chemicals 亚硫酸钠（4843） Class 01 Sodium sulphite 4843 亚硫酸钠 Chinese 亚硫酸钠 English Sodium sulphite Spanish sulfito de sodio Site ref. 4843 Class 01 Included in Harmonised Database (HDB), TM5 ID List, WIPO Madrid Goods and Services (MGS)