... about 5:6 non-symmetry bear design,large volume ,high effciency2.the units abopt multi stage adjustment,each unit can ... 25%-50%-70%-100%,Volume control ,suit for every conditon,high part loade EER value.3.Motor abdopt ,start method , ... .low impact to the power network.4.High precision manfacturing process.aboid any leakage,increase the compressor effciency. 100TON Haier air-cooled screw chiller unit