HONGWU-20+ years experience in nanoparticles production & delivery. Catalyst used Cerium Dioxide Nanoparticle, Carbon Nanotube Powder , Nickelcoated Cnts , Tungsten Oxide Blue Powder ,Length 5-20um Nickel Coated Multi Walled Carbon Nanotubes . We offer products and service for researchers, distributors and end users at home and abroad. If any need welcome to inquiry! The product will supply to all over the world, such as Europe, America, Australia,Pakistan, Venezuela,Bolivia, Jakarta.Customized & ISO certified & Factory prices & Worldwide shipping. Get more feel free to contact us.