Q1. Do you have any warranty? A1: Yes, one year warranty on host machine is given. Q2. How is your after-sale service? A2: We have a professional technology supporting team for your timely services online 24hours. Q3. Will you teach how to use the machine? A3: Yes, we can provide a complete user manual and usage video for instruction and application.We also can supply the online training as you named time. Q4. Why should choose us? A4: We are one of the professional manufacturers with more than 10 years producing experiences in the beauty machine field. And we also have our our R&D center, which can meet your requirements of designing.1.Multi-functional widely application, marvelous treatment effect. 2.10.4 inch big color touch LCD screen, humanized menu, easy operation. 3.UK xenon lamp, long lifetime, stable and big energy. 4.The cooling temperature -3~2℃，treatment more comfortable and safe.