-
Oil & Gas Development Company Ltd. (OGDCL)
-
Pakistan Oilfields Ltd. (POL)
-
Mari Petroleum Company Ltd. (MPCL)
-
Pakistan Petroleum Ltd (PPL)
- Eni Pakistan Ltd.
-
MOL Pakistan
-
Kuwait Foreign Petroleum Exploration Company (KUFPEC)
-
OMV Pakistan
-
United Energy Pakistan Ltd. (UEPL)
-
Polish Oil & Gas Company Ltd. (POGCL)
-
Ocean Pakistan Ltd. (OPL)
-
Dewan Petroleum Ltd.
-
Descon Engineering
-
Siemens Pakistan Engineering Co. Ltd.
-
Sui Southern Gas Company Ltd. (SSGC)
- Sui Northern Gas Pipelines Ltd. (SNGPL)
-
Sea & Land Drilling Contractors Inc. (Saxon)
-
Weatherford Drilling International
-
KCA Deutag GmbH
-
KS Drilling (Atlantic)
-
Hilong Oil Services & Engineering Pakistan(Pvt.)Ltd.
-
Bin Qasim Power Station (BQPS)
-
Lalpir Power Plant
-
HUB Power Plant (HUBCO)
-
Uch Power Plant
- Rousch Power Plant
- Fauji Kabirwala Power Complex Ltd. (FKPCL)
- Kot Addu Power Company (KAPCO)
- Pak Arab Fertilizer (Pvt) Ltd.
- Pak American Fertilizer (Pvt) Ltd.
- Fatima Fertilizer Ltd.
- Pak-Arab Refinery Company Ltd.
- Attock Refinery Ltd.
- Pakistan Refinery Ltd.
- National Refinery Ltd.
- Dawood Hercules Chemicals Ltd.
- Presson Descon International Ltd.
- ENAR PETROTECH SERVICES (PVT) LTD.
- Karachi Water & Sewerage Board (KW&SB)
- WAPDA
- Crescent Steel & Allied Products