... Therapy Machine with CE,ISOTake Hongnie,Take Beauty 1.Principle PDT LED Light Therapy Machine with CE,ISO system developed ... killing acne propionic acid bacilli,skin acnes are subsequently removed. PDT(Photodynamic Therapy)This new technology is systemic administration of a ... sensitiser,which a stimulated by photon,chemical and biologic process.PDT can treat a wide range of skin problem successfully ...