Ultrasonic power supply built-in, power adjustable, time is adjustable, desktop structure, easy to operate.

超声波电源内置，功率可调、时间可调、台式结构，操作简单。

youdao

Ultrasonic power supply built-in, power adjustable, time is adjustable, desktop structure, easy to operate.

超声波电源内置，功率可调、时间可调、台式结构，操作简单。

youdao