The factory was founded in 1974 and it is located 55 kilometers from Ankara on Ankara-Polatli highway and covers an indoor area of 70.000 square meters on a land of 310.000 square meters. it started production of complete transmissions, differentials and their gears and shafts in 1980, under Eaton license.

The factory has produced more than 400.000 complete gearboxes and differentials for trucks, minibus and buses, millions of different type of gears, shafts and gear systems for agricultural and construction machinery, thousands of automatic cross drive transmissions and heavy duty engines for tracked vehicles to date.

HST is the biggest and leader manufacturer with its 750 employees and above 50 million USD turnover in gear production in Turkey.

The factory exports its products to USA, UK, Spain, Ireland, France, Italy, Belgium, Brazil, Pakistan, India and Israel since its foundation.