... water jet handle 3.CE,ISO 4.OEM,ODM Water Oxygen Peel for Skin TighteningTake Hongnice, Take Beauty *Working Theory: Water ... ) Separated design of air source from the machine, ensures normal operation even without oxygen tank, which greatly improves the equipment utilization ... air pressure makes treatment more effective and safer. WK-5200 oxygen water machine could cooperate with any RF, IPL and E-light ...