SARPU® series are nano-silver colloid which has an antibacterial effect against bacteria, yeasts, mould and fungi. ABC NANOTECH makes SARPU® series with a unique nanoparticle technology. Silver ion or nanoparticle of silver destroys the cell wall of the bacteria for nucleus of bacteria not to grow. This phenomenon informs us of why SARPU® series work as an antimicrobial. According to trend of antimicrobial products, consumers are pursuing both safety and effectiveness of antibacterial applications and prefer environment-friendly products. Since SARPU® series, a kind of nano-metallic antibiotic agent, provide safety and easy applicability to products and don’t give rise to any side effect, they will be a future leading antimicrobial. For example, SARPU® has already demonstrated the superiority of quality internationally. SARPU® is the first registered nano silver on the list of Oeko-Tex, International Association for Research and Testing in Field of Textile Ecology, located in Switzerland.