EMU500 Electric Multiple Unit (344 units)

Assisted Mitsubishi Electric Corporation, Woojin Industrial Systems Co., Ltd. and the main contractor Shihlin Electric & Engineering Corporation to jointly implement the main transformer (Mtr), traction rectifier (C/I), Auxiliary power supply (APS), jumper couplers, under-car power cables, etc. were updated, and participated in train commissioning test and executed maintenance and warranty.