- The wave length of the rays is classified as infrared rays, visible rays, ultraviolet rays and
  X-rays in order from the longest. Ultraviolet rays are utilized mainly to the dermatological
  treatment as its length too long to penetrate into the skin. As a kind of wave energy, the
  frequency ranges of infrared rays in 0.76~1.5 microns are called near infrared rays, 1.5~5.6
  micron rays are medium infrared rays and 5.6~1.000 microns far infrared rays. A German
  physicist(The Nobel Prize Winner) proved that infrared rays with the frequency ranges
  between 6~14 micron are effective to ionized heat treatment.

- Deodorizing harmless to human body
- Lead to sound sleep
- Absorbing and dispersing of electromagnetic waves
- Promotion of blood circulation
- Neutralizing effects of poison
- Insecticidal effects