... 2>without medical and biology additives 3>eco-friendly. Nano Silver Antimicrobial AgentSpecificationBrownish yellow or yellow according to different concentration ... the concentration of the Nano Silver Anti-bacterial Agent is 5-25mg/L, you can use a sprayer to spray, 3 ... , gonorrhoea, etc.), rhinitis, tympanitis, etc, the concertration of nano silver disinfectant is100-250mg/L.4. Culture relic, plant or ...