If you're planning to order small sample or larger quantities for your industrial or academic needs, please note that customization of parameters are available, such as size, functionalities, SSA, packages,etc. cuprous oxide cu2o, 91% Double Walled Carbon Nanotubes , 80-100nm Zirconium Oxide Nanoparticles , Fe Powder ,Precious Metal Catalyst . ( MWCNT, nano Si, nano Ge etc for betteries; nano Fe for sewage treatment, etc ) The product will supply to all over the world, such as Europe, America, Australia,Nicaragua, Sweden,Swiss, Bahrain.If you're planning to order small sample or larger quantities for your industrial or academic needs, please note that customization of parameters are available, such as size, functionalities, SSA, packages,etc.