... 4.CE Certification 5.OEM E LightPrinciple E light treatment system has four points: bipolar radiofrequency + low energy pulsed light ... used to adjust impedance values of the tissue, guided RF ( RF ) energy deeply, adjusted focusing wave on different position ... collagen hyperplasia, rearrange, achieving the purpose of firming, wrinkle.Rf (radio frequency) energy absorption is not influenced by melanin, ...