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. 20-30nm palladium powder, Nano Silver Solution , Nano Copper , Tio2 Nanotubes ,Precious Metal Catalyst . 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,Karachi, Tajikistan,Swansea, Liberia.Customized & ISO certified & Factory prices & Worldwide shipping.