One of the most fundamental competitive edges of Sahanddour Gearbox Company is the production of industrial gearboxes with great diversity. At first, it produced worm gearboxes, and following the establishment of the R&D Department in 1997, it began to reverse engineer and localize many foreign gearboxes and spare parts ordered by large infrastructural companies in different sectors in the country, including the petroleum, gas, petrochemical, refinery, steel, cement, power plant, water and sewage, wood and paper, agricultural, publication and packaging, plastic and rubber, food, maritime, and so on.