... 1.Working TheoryPhoton dynamical nurse therapy is a new technology,using the photon power to do skin maintenance and treatment, ... produce collagen proteins,increase skin elasticity and take important part in rehabbing aging and acne skin ,lightening flecks,skin upgrade ... 9000 approvaled in Nov. 2007,SFDA certificate in Mar 2009,CE certificate in June 2009,ISO13485 is in processing review in 2010.6. ...