1. Punjab Alkalies & Chemicals Ltd., (Mercury Cells.) 2. Ballarpur Ind. LTd. (Membrane Cells.) 3. Modi Alkalies & Chemicals Ltd., (Mercury Cells) 4. Kanoria Chemicals & Industries Ltd., (Mercury Cells) 5. Bihar Caustic & Chemicals Ltd., (Mercury Cells) 6. Durgapur Chemicals Ltd., (Mercury Cells) 7. Hindustan Paper Corporateion Ltd., Mercury Cells (Chlorate Cells) 8. Hindustan Paper Corporation Ltd., Mercury Cells (Chlorate Cells) 9. Hindustan Heavy Chemicals Ltd., (Mercury Cells) 10. Hukumchand Jute & Industries Ltd., Membrane Cells. (Mercury Cells) 11. J. K. Corporation Ltd., Orissa(Chlorate Cells) 12. Ballarpur Ind. Ltd., (Membrane Cells) 13. Jayashree Chemicals Ltd., (Mercury Cells). 14. APPM, (Chlorate Cells) 15. Andhra Sugars Ltd., Membrane CElls (Mercury Cells) 16. Sree Rayalaseema Alkalies & Allied Chemicals Ltd., (Membrane Cells) 17. Southern Petrochemical Industries (Mercury Cells) 18. Chemplast Sanmar Ltd., (Mercury Cells) 19. Travancore Cochin Chemicals Ltd., Kundra Unit. Mercury Cells 20. Ballarpur Industrial Ltd., (Mercury Cells) 21. National Rayon Membrane Cells (Mercury Cells) 22. Standard Alkali (Membrane Cells) 23. Century Rayon, Membrane Cells (Mercury Cells) 24. Atul Ltd., Membrane Cells (Mercury Cells) 25. Mardia Chemicals Ltd., (Membrane Cells) 26. Tata Chemicals Ltd., (Membrane Cells) 27. Indian Petrochemicals Ltd.,(Membrane Cells) 28. Gujarat Alkalies & Chemicals Ltd., (Membrane Cells) 29. Nepa Mills Ltd., (Membrane Cells) 30. Shriram Vinyl & Chemical Industries (Mercury Cells) 31. NRC Limited, Mohone, Maharashtra (Mercury Cells) 32. Anam Potchem Limited, Jaipur (Chlorate cells) 33. Travancore Cochin Chemicals Ltd., Kalamassery Unit.(Chlorate cells) 34. Hindustan Paper Corporation Limited, Cachar Paper Mill, Assam. (chlorate cells) 35. Modi Alkalies and Chemicals Ltd., Alwar (membrane cells) 36. NRC Limited, Mohone (membrane cells) 37. Punjab Alkalies and chemicals ltd., Naya Nangla (membrane cells) 38. Southern Petrochem Industries Corp. Ltd., Kurnool (membrane cells)