Tanfac Industries Ltd is a joint sector company promoted by Aditya Birla Group and Tamil Nadu Industrial Development Corporation (TIDCO). The manufacturing facilities are spread over 60 acres in the chemical complex of SIPCOT Industrial Estate, Cuddalore. Cuddalore is 20 KM South of Pondicherry, about 200 KM south of Chennai, India. The company began commercial production in March 1985 and is amongst the leading producers of Hydrofluoric Acid and its derivatives.

Tanfac is engaged in the manufacture of Anhydrous Hydrofluoric acid, Sulphuric Acid, Oleum. Aluminium Fluoride, Potassium Fluoride, Potassium Bifluoride, Boron Trifluoride Complexes, Calcium Sulphate (Gypsum), IsoButyl Acetophenone, Acetic Acid, Peracetic Acid and Poly Aluminium Chloride, etc.