First incorporated in 1989 as Tractor-Line Engineering Sdn Bhd with only a light industrial lot of 10,000 sq. ft., Tractor-Line Holdings Sdn Bhd has since emerged as a leading manufacturer in tractor and hydraulic replacement parts and components as well as automotive air-conditioning original equipment.Today, Acestahl Holdings Sdn Bhd, fortified with a string of associate companies, a 120 strong workforce and a vast industrial zone occupying a land area of 100,000 sq. ft.