Bus & Special Vehicle Manufacturer PT Trijaya Union is one of the oldest bus manufacturers in Indonesia, operating since 1978. PT Trijaya Union manufactures buses of varied sizes such as medium, big and high deck buses. PT Trijaya Union works closely wit PT Krama Yudha Tiga Berlian as a vendor to assemble Mitsubishi chassis for Mitsubishi Indonesia. We also manufacture components such as bus seats and fibre. PT Trijaya Union is located in an industrial area in Tangerang.