1.Introduction PDT is currently the world’s top scientific and technological achievements. It adopts a narrow spectrum of red, blue and yellow ribbon light wave launched by the gene chip imported from USA. Irradiate the skin directly. Restore the nature vitality of skin cells. It is a safe. non-invasive cosmetic technology. Painless. non-invasive, no adverse reaction and side effect. and is respected as the green approach to beauty by the international medical WHO.   2.Features 1. National patent product 2. Green beauty 3. User-friendly design 4.      Freely set the duration of treatment and output mode 5.      Easy to operate and no special nurse 6.      Light weigh and portable 7.      High light efficiency and large irradiated area   3. Applications: Red light(=650nm): Promote metabolism, Skin rejuvenation, Skin-whitening; Wrinkle removal, Skin-smooth ,Injured skin recovery;，Improve hair growth,  Relieve fatigue and relax etc. Blue light (=410nm): Sterilize, Speckle & Vascular & Acne removal etc.  Yellow light(=590nm): stimulate microcirculation, improves the rough skin, Skin that is darkened, flabby, withered-yellowish