An Islamic Revolutionary Guard Corps (IRGC)-owned group of companies that acts as a prime contractor on projects for Iran's ballistic missile and nuclear programs; involved in large-scale civil and military construction and engineering projects, according to the U.N. Security Council; oversees subsidiaries that, according to the U.N. Security Council, "were heavily involved in the construction of" the Fordow Fuel Enrichment Plant.

Civil engineering activities include road and dam construction and the manufacture of pipelines to transport water, oil, and gas; also involved in mining operations, agriculture, and telecommunications; main clients include Ministry of Energy, Ministry of Oil, Ministry of Roads and Transportation, and Ministry of Defense.

Subsidiaries identified by the U.N. Security Council include:

• Fater Institute
• Gharagahe Sazandegi Ghaem (GHAEM)
• Ghorb Karbala
• Imensazan Consultant Engineers Institute (ICEI)
• Makin Institute
• Oriental Oil Kish (OOK)
• Rah Sahel Institute
• Rahab Engineering Institute
• Sepanir Oil & Gas Energy Engineering Company
• Sepasad Engineering Company

​Other subsidiaries reportedly include:

• Ashura Organization
• Ghorb Kosar
• Noor Organization
• Sama Organization
• Special Holding Company of Technology, Information, and Connection (Samavat)

Oversees Ghorb Nooh, which owns or controls Hara Company, Omran Sahel, and Sahel Consultant Engineers; controls, directly and through subsidiaries, Tehran Gostaresh Company.

Effectively controls Iran Marine Industrial Company (SADRA) through Sepanir, according to the European Union; reportedly holds shares in Azar Ab Industries Co. and Machine Sazi Arak Co.; reportedly works with 5,000 specialized companies, which have included Aria Nikan and Pasargad-Jonub Civil and Engineering Co.

Has been involved in projects for the Passive Defense Organization (PDO); in 2013-2014, established a Center for Practical Research and Self-Sufficiency that partners with Iranian universities and laboratories; in 2017, signed a partnership agreement with Imam Hussein University of the Revolutionary Guards; in 2019, reportedly signed a partnership agreement with Iran University of Science and Technology.

Has reportedly been involved in several phases of Iran's South Pars Gas Development (SPGD) project, including contracting Pars Oil & Gas Company (POGC) for work on phases 1 - 6; reportedly signed a contract with National Iranian Gas Company (NIGC) and Parsian Bank for the construction of a gas pipeline; a client of Iran Tablo Company.

In partnership with the Ministry of Roads and Urban Development, constructed the first three sections of the Khaf-Herat Railroad linking Iran to Afghanistan; in 2017, reportedly signed a memorandum of understanding with the Syrian Engineers Syndicate.

Company officials include commander (head) Saeed Mohammad, deputy commander Alireza Fakhari, and Supreme Leader’s representative Mahmoud Dehghani; former officials include Rostam Qasemi and Parviz Fatah.

Reportedly established in 1990.

Sanctions

Designated by the U.N. Security Council on June 9, 2010, pursuant to resolution 1737 (2006), as an entity of Iran's Islamic Revolutionary Guard Corps (IRGC); subsequently designated by U.N. Security Council resolution 2231 (2015); removed from the U.N. list on October 18, 2023, following the expiration of targeted sanctions contained in resolution 2231.

Listed by the European Union on June 24, 2008, as an entity linked to Iran's proliferation-sensitive nuclear activities or Iran's development of nuclear weapon delivery systems; with some exceptions, E.U. member states must freeze assets owned or controlled by the entity, directly or indirectly, and prevent assets from being made available to it.

Added on October 25, 2007, to the Specially Designated Nationals (SDN) list maintained by the U.S. Department of the Treasury's Office of Foreign Assets Control (OFAC), freezing its assets under U.S. jurisdiction and prohibiting transactions with U.S. parties, pursuant to Executive Order 13382, which targets proliferators of weapons of mass destruction (WMD) and their delivery systems; also designated pursuant to Executive Order 13224, which targets terrorists and those providing support to terrorists or acts of terrorism; also subject to the Iranian Financial Sanctions Regulations; foreign parties facilitating transactions for the entity or otherwise assisting the entity are subject to U.S. sanctions.

Sanctioned by the governments of Australia, Canada, South Korea, and the United Kingdom, restricting business and financial transactions with the entity and/or freezing its assets in those countries.

Listed by the Japanese government in 2022 as an entity of concern for proliferation relating to missiles and biological, chemical, and nuclear weapons.

Listed by the British government in 2015 as an entity of potential concern for WMD-related procurement, but removed in 2017 after the U.K. withdrew its Iran list.