Nationnal Iranian Oil Engineering & Construction Co.

Nationnal Iranian Oil Engineering & Construction Co.

Nationnal Iranian Oil Engineering & Construction Co.

National Iranian Gas Company

Nationnal Iranian Oil Engineering & Construction Co.

Iranian Oil Terminals Company

Nationnal Iranian Oil Engineering & Construction Co.

Petroleum Engineering & Development Company

Nationnal Iranian Oil Engineering & Construction Co.

Iranian Offshore Oil Company (Code 7273)

Nationnal Iranian Oil Engineering & Construction Co.

Manufacturing Support & Procurement Kala Naft Tehran