O&C Electric Technique Co.,Ltd known as OCET is dedicated in design and manufacturing small to medium sized converter systems for mass transit industry. All over the world, our fully customized product has been put into daily use in the most quality demanding enviroment among Mass Transit industry. Besides IRIS, OCET also have ISO：9001, EN15085, ISO：14001, OHSAS:18001 certifications. PRODUCT RANGE: Auxiliary Power supply system. Small Power converters (<10kw): single-phase galvanic isolated power supply, Emergency ventilation inverter, converter and control system for locomotive air conditioner, EMU HVAC power supply, etc. Medium Power converters (10kw-400kw): Battery Charger, Bi-directional DC/DC Converter, Converter for emergency traction, EMU HVAC power supply, etc.