We are the good quality manufacturer of essence, flavouring, food colour & preservative. We mainly manufacturer the food preservative like potassium hydrogen sulfite, ethylenediaminetetraacetic acid. Potassium hydrogen sulfite or potassium bisulfite is a chemical compound with the chemical formula khso3. It is used during the production of alcoholic beverages as a sterilising agent ethylenediaminetetraacetic acid, widely abbreviated as edta (for