Antimicrobial, antisepsis, mildew-proof Product description Nano silver colloid is made up nano silver particle and colloid material which nontoxic, non smell, safety, no irritative and less 15nm, Due to it is non antibiotic and high effective broad- spectrum sterilization agent, it can prevent and cure many kinds of morbid. Product feature Silver content 350ppm Silver particle diameter less 15nm Nontoxic non antibiotic antimicrobial agent Pass Switzerland SGS skin stimulation test, Quickly effective, durable medicine effective Double function of cure and prevention Broad spectrum sterilization, restraining and killing colon bacillus and staphylococcus, etc.