1. Copper process
   (1) Pipe cutting exercise
   (2) The tube flaring making practice
   (3) The tube overlap making practice
   (4) Elbow exercises
   (5) Sealed tube exercises

2. Copper tube welding operation
    Specify the location of the tube welding practice by silver soldering, brazing, aluminum 
    welding with nitrogen flow, use oxyacetylene, Soldering Guns , hydroxide flame etc.

3. Refrigerator system processing
    Refrigerant processing program exercises, including a pressurized leak detection, steady 
    pressure, vacuum, filling refrigerants and other exercises.

4. Circuit processing
   (1) Electrical component testing
   (2) the circuit connection and inspection

5. Refrigerator running test

6. PID controller exercises