From Hongwu, you can easily purchase nanoparticles at great prices.We invite you to contact us for further info about our company and our capabilities. At HONGWU, we could be glad to be of service to you. We look forward to your suggestions and feedback. Nano ZrO2 powder Used for Heat Insulation, Broad Spectrum Sterilization , 2nm , 70nm Tantalum Nanoparticles ,Length 1-2um -Oh Functionalized Multi Walled Carbon Nanotubes . Quality comes first, service and customer experience are also value. - HONGWU NANO. The product will supply to all over the world, such as Europe, America, Australia,luzern, Jakarta,Detroit, Manila.Carbon Nanotubes (SWCNT,DWCNT,MWCNT and functioned nanotubes) ;