Working Principle of the 3-Handle 22D Max HIFU Machine The 360 MAX system integrates three core aesthetic technologies: HIFU focused ultrasound, 6.78 MHz spiral sine-wave RF, and EMS microcurrent pulse. Its 15RS multi-dimensional handpiece supports hollow-beam ultrasonic shockwave with an ultra-short 20 μs ultra-pulse output. This device performs multi-layer stratified heating across skin tissues: shallow-depth heating targets superficial fine lines, mid-layer heating firms