Radio Frequency (RF) is the abbreviation of radio frequency, indicating the electromagnetic frequency that can be radiated into space, and the frequency range is 300 kHz to 30 GHz. Radio frequency is abbreviated as RF current, which is the abbreviation of high frequency AC electromagnetic wave. Alternating current that changes less than 1000 times per second is called low-frequency current, and that that changes more than 10000 times is called high-frequency current, and radio frequency is such high-frequency current.

Ultrasonic wave is a sound wave with a frequency higher than 20000 Hz. It has good directivity, strong penetration ability, easy to obtain concentrated acoustic energy and long propagation distance in water. It can be used for ranging, measuring speed, cleaning, welding, crushing, sterilization and disinfection. It has many applications in medicine, military, industry and agriculture. Ultrasound is named because its lower frequency limit is about equal to the upper hearing limit of human beings.

There are now 40K strong sound waves with a frequency higher than 400,000 Hz.

This instrument is very effective in facial shaping and weight loss.

In addition, I know that Guangzhou Qianmei Beauty Body Instrument Equipment Factory produces this kind of instrument. You can consult. The person in charge is Huang.