The Pneumatic-Hydraulic-PLC Integrated Control Laboratory was developed by our company based on the teaching syllabus requirements for pneumatic, electrical, and hydraulic control in mechatronics courses at universities. It integrates the advantages of our pneumatic and hydraulic PLC control experimental equipment, and was developed through continuous innovation and improvement after extensive consultation with experts, professors, and teachers. It is currently an ideal comprehensive experimental device integrating pneumatic control technology, hydraulic transmission control technology, and PLC programmable controller control technology. During experiments, these technologies can complement and cross-control each other. This allows students to intuitively and perceptually compare and understand the characteristics, features, advantages, and disadvantages of each pneumatic, electrical, and hydraulic system.

1. Reversing circuit using a manual directional valve.
2. Use a lock circuit for a mid-position functional directional valve.
3. Use a hydraulically controlled directional valve for the locking circuit.
4. Pressure setting circuit.
5. Two-stage pressure control loop.
6. Pressure reducing circuit using a pressure reducing valve.
7. Use a booster circuit with a booster cylinder.
8. Unloading circuit using H- type directional valve.
9. Oil inlet throttling speed control circuit.
10. Return oil throttling speed regulation circuit.
11. Reversing speed control circuit of variable speed gear pump.
12. A composite speed control circuit consisting of a speed-regulating gear pump and a speed-regulating valve.