• 

  Saudi Aramco

• 

  Sabic

• 

  Saudi Kayan

• 

  Saudi Arabian Fabricated Metals Industry Co. Ltd. (SAFAMI)

• 

  SAS Jazirat Al-Arab For Trading Industrial Services(L.L.C)

• 

  Arabian Pipeline & Services Co. Ltd. (ANABEEB)

• 

  Technip

• 

  SAMSUNG

• 

  Bo Won Lee Contracting Est.

• 

  New Horizon Compnay.

• 

  Cameron Al-Rushaid Ltd

• 

  Saudi BInladin Group.

• 

  SETE Saudia (SETE Energy Saudia for Industrial Projects Ltd.)

• 

  Olayan Descon Industrial Company.

• 

  M.S. Al-Suwaidi Industrial Services Co. Ltd.

• 

  Daelim

• 

  GS E&C

• 

  Kentz

• 

  Petro Rabigh

• 

  Sadara

• 

  Safco

• 

  Satorp

• 

  Sinopec

• 

  SK E&C

• 

  Sulzer

• 

  Tansee

• 

  REDA Fire & Safety

• 

  National Contracting Company (NCC)

• 

  Hyundai Heavy Industries Co.Ltd. (HHI)

• 

  L&T Electrical & Automation Saudi Arabia Company Limited

• 

  GSCC (Gulf Sky Crane Company)

• 

  GCC

• 

  MRC