Southern Petrochemical Industries Corporation Limited · Nilakkottai Food Park Limited · Tamilnadu Forest Plantation Corporation Limited · Tamilnadu Salt Corporation Limited · Tamilnadu Civil Supplies Corporation · Tamilnadu Sugar Corporation Limited · Perambalur Sugar Mills Limited · Tamilnadu Cements Corporation Limited · Tamilnadu Backward Classes Economic Development Corporation Limited. · Tamilnadu Power Finance And Infrastructure Development Corporation Limited · Tneb Limited · Tamilnadu Trade Promotion Organisation · Tamilnadu Industrial Investment Corporation Limited · Tamilnadu Industrial Explosives Limited