He holds licenses for such practice in Taiwan and the State of California in the U.S.A. He has 10 years of experience in the employment of lasers in dental treatment , using Erbium Diode Laser . He has trained in Rome , Milan, and also at LAMBDA Headquarters . His training also includes the training course held by the Oral Lasers Medical Academy of R.O.C. and subsequent licensing after passing an examination to be a Specialist in Laser treatment . In his clinic , he uses the several Diodes and the Erbium Lasers.