PT Gajah Tunggal Tbk is a leading manufacturer and exporter of tires in Indonesia with products for motorcycles, commercial vehicles and passenger cars. In addition to manufacturing end-product, the publicly traded company has also expanded upstream by establishing subsidiaries in areas such as the production of synthetic rubber.

Prima Alloy Steel Universal Tbk is an Indonesian-based publicly-traded company primarily engaged in the automotive industry as a manufacturer of aluminum alloy wheels. The company's products are marketed under brand names such as Akuza, Ballistic, Devino, Incubus, Menzar, Panther, PCW and Viscera.