... ~2mmAl: 0.2~3+0.2~3mmnickel 0.1~1.2+0.1~1.2mmbattery spot weldingWelding Principle: Ultrasonic metal welding is ... , no welding sparks, environmental protection and safety.Local advantages:1, using phase-locked PLL frequency automatic tracking technology, without ... amplifier.Ultrasonic metal welding application of products:1, nickel oxide and nickel battery nickel screen films each melt.2, lithium ...