- I. O. C. L.
- H. P. C. L.
- B. P. C. L.
- Essar Oil Ltd.
- Chennai Petroleum Corpration Ltd., Chennai.
- Reliance Industries Ltd.
- Mott Mac Donald
- Chemtrols Industries Ltd.
- Uhde India Ltd.
- Honeywell Automation India Ltd.
- Praj Industries Ltd.
- Nuberg Engineering Ltd. Noida.
- Gail India Ltd.
- Bhel Banglore
- Degremount Ltd.
- Nalco, Orrisa
- Rashtriya Chemical & Fertilizers Ltd.
- SI Group, Mumbai.
- Deepak Fertilizers & Petrochemicals Corporation Ltd.
- Lubrizol India Pvt. Ltd.
- Sudharshan Chemical Ltd.
- Ganesh Benzoplast
- Gujarat Fluorochemicals Ltd.
- FACT, Kochi.
- Alkyl Amines Ltd. Patalganga.
- Pidilite Industries Ltd.
- Zuber Industries Ltd. Goa.
- Huber S.A., Greece.
- Helios Focus, Israel.
- Ganama Trading & Contracting Co. Suria
- Hayan Petroleum Co. Suria.
- Office Mart, Africa
- Tomorrows Warlds Ltd. Ghana.
- Star Best Nigeria
- Al Bahr Al Arabi Engieering Marine Service Co., Soudi Arabia
