- SAUDI METHANOL COMPANY ( AR-RAZI )
- NATIONAL INDUSTRIAL GASES COMPANY ( GAS )
- ARABIAN PETROCHEMICAL COMPANY. ( PETROKEMYA )
- NATIONAL CHEMICAL and FERTILIZER COMAPANY. ( IBN-AL-BYTAR )
- SAUDI ARABIAN FERTILIZER COMPANY ( SAFCO )
- AL-JUBAIL PETROCHEMICAL COMPANY ( KEMYA )
- UNITED PETROCHEMICAL COMPANY. ( JUPC )
- SAUDI IRON and STEEL COMPANY ( HADEED )
- SAUDI EUROPEAN PETROCHEMICAL COMPANY. ( IBN-ZAHR )
- EASTERN PETROCHEMICAL COMPANY. (SHARQ)
- IBN SINHA
- YANBU NATIONAL PETROCHEMICAL COMPANY
- SAUDI ARAMCO
- ZAMIL STEEL INDUSTRIES LTD.
- ZAMIL STEEL BUILDING VIETNAM COMPANY. LTD.
- CANAM ASIA LTD.
- REDLAND INDUSTRIAL SERVICES.
- COLT ARABIA LTD.
- TAMIMI GLOBAL
- NESMA EMCOR
- A.Y.T.B
- SAUDI BERKEFELD
- SADAFCO
- ABACORP
- MOHAMMED AL-MOJIL
- HUSSEIN AL ALI
- REMAL TELECOM
- MAADEN
- SaudiGrate
- Al-Taisir company
- Alrashid for contracting
