The principle of intermediate frequency therapy is that the pulse from physiotherapy instrument can directly stimulate sympathetic nerve, dilate blood vessels, promote blood circulation, improve local blood supply and nutrition, improve tissue vitality, accelerate the excretion of metabolic waste, and achieve the purpose of anti-inflammation and improving tissue vitality. Achieves the purposes of diminishing inflammation, relieving pain, reducing swelling and promoting blood circulation, and can also stimulate neuromuscular and produce exercise effect, thus achieving the effect of relieving fatigue. Like the intermediate frequency physiotherapy instrument products of Bei Yikang's family, it has been focusing on the medical device industry for 20 years. Its advantages and characteristics are not only aimed at many parts of shoulders, neck, waist and legs, but also can play a medical role, which can relieve pain, diminish inflammation and promote blood circulation. It has good analgesic, anti-inflammatory, edema eliminating, local blood circulation improving, and inflammation dissipating effects. Soften scars and relax adhesion; Excite neuromuscular tissue and other effects. Prescription for a variety of indications, including three unique intermediate frequency therapy: low-frequency modulation intermediate frequency and constant amplitude intermediate frequency, interference current therapy, which belongs to the same level of hospital products and cooperates with many offline hospitals. Compared with hospitals, it has a good curative effect and is more economical. Their physical therapy instrument can be used for physical therapy of various diseases in addition to daily shoulder, neck and lumbar problems. Up to 99, 70 and 35 squares. Different prescriptions aim at different diseases, and different prescriptions are used for different diseases, covering a wider range, taking effect faster and reaching a deeper level. Baidu also has a lot of related information.