1. The control of machining accuracy of stator and rotor, unevenness of iron core punching and concentricity of inner and outer diameters of stator and rotor involves punching process, stator assembly process control, rotor aluminum casting and excircle machining process;

2. Assembly process of compressor shell;

3. Press-in fixture of rotor and stator and process control, fixture accuracy, equipment action and process analysis;

4. Degree of automation, production rhythm and corresponding process control;

5. Stability of employee operation and process manufacturing level;

6, the production capacity of equipment.