EU Trademark Classification EU01 Chemicals Sulfite for preserving food Class 01 Sulfite for preserving food 4990 亚硫酸盐用于保存食物 Chinese 亚硫酸盐用于保存食物 English Sulfite for preserving food Spanish Sulfito para conservar alimentos Site ref. 4990 Class 01 Included in Harmonised Database (HDB)