Following the general approach of cutting the country's dependence on industrial parts and components, TSF decided to take a step forward in railway industry by participating in the project of producing railway turnout in Iran. After an intensive technical research and also prototype production, T.S.F managed to produce the final piece of one of the most complicated parts in turnout unit under the name of “curved frog TG 1/9 R300 M” in full compliance with the provided technical data. The assessment results ascertained a quality-oriented production.

At this point, TSF has been approved by "Islamic Republic of Iran Railways" as the producer of Mn frog for U33 turnouts and the approved sample part will go through performance testing in a near future.