... , etc Collagen Stimulation Vertical 0 - 20KHz Ultra Pulse, CO2 Fractional Laser Machine MED-870+, 635 n Large Image : Vertical 0 ... - 20KHz Ultra Pulse, CO2 Fractional Laser Machine MED-870+, 635 nmProduct Details: Place of Origin ... per monthDetailed Product DescriptionVertical 0 - 20KHz Ultra Pulse, CO2 Fractional Laser Machine MED-870+, 635 nm Applications· Skin Resurfacing ...