Tamilnadu Cements Corporation Limited · Metropolitan Transport Corporation (Chennai) Limited · Tamilnadu Small Industries Corporation Limited · Tamil Nadu Medical Services Corporation Limited · U60220 Tn1971 Plc006088 · U28991 Tn1965 Plc005361 · L40200 Tn1976 Plc007081 · U85110 Tn1994 Plc027939