3A Clizen's head office is located in Incheon with automotive heat exchanger production facilities in Doegu and Changyoung. We emphasize "high quality, improvement technology, cost reduction & just-in-time delivery". Our automotive heat exchanger & automotive compressor parts production lines able to meet the toughest requirements and expectations for pruducing worldclass automotive compressor pistons, automotive condensers, ac compressor clutchs, automotive pulleys, crank shaft pulleys, field coil assembly, heater coils, copper heater cores, swashplate assembly, clutch pulley and automotive evaporators.