... Low price, easy to operate 3. High quality, CE 2013 BEST SELLER!! High Quality Active electro-optical Q-switched nd yag ... lasers feature with low noise, high stability, high efficiency, high reliability and excellent laser beam quality.Warranty and After-sale service:1 ... within 1 month. 2. Main Service Items: Teach and support about medical & beauty devices’ use, installation, adjustment, maintenance ...