Qatar Petroleum

Ministry of Public Health

Kahramma

Hamad Medical Corporation

Mwani Qatar

Hamad international Airport

Qatar Aluminium (Qatalum)

Ministry of Municipality and Environment

Suez

Qatar Vinyl Company LTD

Qatar Airways

Qatar Petrochemical Company

Qatar Building Company

QAFCO

Oooredoo

ICT Qatar

Qatar Fuel Additives Companty Limited.

Qatar Steel

Widam Food Company (Previously Mawashi)

Petro Energy E & P

Supreme Education Council

Habtoor Leighton Group

Boom Construction

Qatar Rail

Sidra Medical and Research Center

Oryx

Malomatia

QatarGas