Bharat Petroleum Corporation Ltd., 
Bharat Heavy Electricals Ltd.
Bongaigaon Refinery & Petrochemicals Ltd.
Bridge & Roof Co. (India) Ltd.
Chennai Petroleum Corporation Ltd.
Department of Atomic Energy
Directorate of Purchase & Stores,  Govt. of India
Gammon India Ltd.
Ganesh Banzoplast Ltd.
Gas Authority of India Ltd.
Gujarat Alkalies & Chemicals Ltd.
Gujarat State Fertilizers Co. Ltd.
GNFC Ltd.
Engineering Projects India Ltd.
FACT Ltd.
Herdillia Chemicals Ltd.
Hindustan Dorr-Oliver Ltd.
Hindustan Insecticides Ltd.
Hindustan Petroleum Corporation Ltd.
Hindustan Zinc Ltd.
Indian Farmers Fertilizer Cooperative Ltd.
Indian Oil Corporation Ltd.
Indian Space Research Organization
Krishak Bharati Co-operative Ltd.
Lubrizol India Ltd.
Madras Refineries Ltd.
Mangalore Refinery & Petrochemicals Ltd.
Mazagaon Dock Ltd.
National Fertilizers Ltd.
NOCIL Ltd.
Nuclear Power Corporation of India Ltd.
NTPC Ltd.
Oil & Natural Gas Corporation Ltd.
Oil India Ltd.
Petron Engineering Construction Ltd.
Reliance Industries Ltd.
RCF Ltd.
Steel Authority of India Ltd.
Tata Chemicals Ltd.
TELCO Ltd. (Tata Motors Ltd.)
TOMCO Ltd.
Thermax Ltd.
Zuari Industries Ltd.