National Iranian Gas Company (NIGC) introduced a Project, which called 50 TC and put it the international tender form. Then to achieve the aforementioned goals, NIOC Pension Fund established OTC. The executive teams of OTC formed, the domestic manufacturing program defined, and negotiations made with different manufacturers on that base. When Siemens (former Alstom Power) won the tender, executive actions proportional to Siemens and his Local Partner entered its initial stages. OTC actually started his activities with Turbo Compressor manufacturing of 50 TC Project but gradually entered to other fields according to Ministry of Petroleum requests.