Look at a spread of countries using either (1) department of agriculture, or (2) department of environmental protection. Typically you're looking at North and South America, Europe and Asia as general market sectors.
Nanosilver is used in developing nanoparticles for the bio-system. It considered a strong inhibitory and bactericidal effect as well as a broad spectrum of antimicrobial activities. the nanoparticle silver has a high surface area and a high fraction of surface atoms, with high antimicrobial effects as compared to the bulk silver. For more details and information can read the following references;