EghtesadOnline: National Iranian Gas Company, a subsidiary of the National Iranian Oil Company, has invested $4 billion to fast track the indigenization of 29 vital equipment in collaboration with domestic manufacturers and engineers over the past two decades, the head of state-run NIGC said.

EghtesadOnline: More than 12,000 parts and equipment used in the oil industry have been indigenized, managing director of the National Iranian South Oil Company said Friday.