Introduction: The AR-108 is an affordable ultrasonic polishing machine featuring automatic power regulation, a function typically found only in high-end equipment. It is suitable for mold finishing, fine slot & groove micro-machining, and PCB circuit modifications. 36W high-power output, operating at 25,000 vibrations per second, with an adjustable amplitude range of 10–35?m. Power suspension system reduces output to 6W when the handpiece is idle, preventing overheating and extending transducer lifespan. Pressure-sensitive power adjustment: The system dynamically adjusts output based on applied hand pressure, ensuring ultra-precise polishing results. Compared to traditional manual polishing, this ultrasonic polishing machine significantly enhances efficiency, ensuring consistent and fine surface finishes.