The core business during its establishment was to provide repair and maintenance works for Ruston Bucyrus (RB) equipment that were mainly used for the irrigation works in Kedah. Up till the 1970’s, Hoe Heng entered the sugar cane plantation and sugar mill industry by providing maintenance supports, modifications and fabrication of machine spare parts. Later it participated in the plant annual maintenance and improvement works. By the end of the 1970’s, Hoe Heng started to provide maintenance work to cement industries. At the same time, it became the major contractor for one of the two cement companies that supported the cement plant in north Malaysia.