Each batch of nanoparticles is extensively characterized using techniques including SEM or TEM, XRD, COA, etc. In addition to ensuring that every batch of nanoparticles meets our stringent quality control requirements, customers are provided with batch-specific specification sheets containing representative SEM/TEM images, Coatings, dispersions, and solution pH. Ink Used Silica Nanopowder, 100-200nm Magnetic Iron Oxide Nanoparticles , Red Iron Oxide Powder , 70nm Tantalum Nanoparticles ,Pure Silver Powder . Customized & ISO certified & Factory prices & Worldwide shipping. The product will supply to all over the world, such as Europe, America, Australia,Niger, Boston,Juventus, St. Petersburg.Customized & ISO certified & Factory prices & Worldwide shipping. Get more feel free to contact us.