1. Ultra high energy efficiency. 2. Nearly 100% of the volumetric efficiency with super long heating capacity. 3. Super wear-resistant ability and outstanding reliability. 4. Copeland patent flexible design of axial and radial provides fluid resistance attack and tolerance ability of built-in motor circuit breaker with hitherto unknown impurities. 5.The motor can effectively protect the motor from the damage of high temperature and high voltage current, low noise low exhaust impulse noise value is lower than piston compressor 5 dB. 6. To simplify the system design. 7. The unique design makes the single start unloading compressor start without a starting capacitor / relay. 8. In most applications without the crankcase heater and gas liquid separator.