The permanent magnet variable frequency compression air compressor recognized as the most energy-efficient air compressor in the world. It is equipped with a permanent magnet motor that adopts high performance permanent magnet steel body, which makes it 5%-12% more energy-efficient than ordinary three-phase asynchronous motor. The motor can maintain a high efficiency even under low speed, so that the compressors can save 32.7% of energy on an average. For the high efficiency and reliability, our air compressors are widely used in European and American countries.