Leading nanoparticles manufacturer with tons of experience. Export supply of high quality colloidal nano silver, copper and bismuth. Features: Concentration from 1000 to 10000 ppm Particles size 10-40 nm Distilled water or DMSO solvents 100% antimicrobial efficacy and prolong effect (against viruses, bacteria, fungi and algae) Easy mixing with other materials Tests as per customer requirements Full products support Bespoken solutions Private label Shipping to every country around the world