RF skin tightening machine 1.Multi RF heads 2.Wrinkle removal, skin lift, slimming 3 ... Radio Wave Frequency Machine,RF Skin Tightening MachineTheory of Monopolar RF MachineMonopolar RF takes that epidermis balances normal temperature, RF electric waveproduces heat ... , based on assurement of skincomfortable, harmless, it uses RF electric wave to produce heat exchange, precisely attainsskin deep, ...