HONGWU-20+ years experience in nanoparticles production & delivery. 30-50nm Bismuth Oxide Nanoparticles, Cesium Tungsten Oxide , 100-200nm Iron Oxide Nanoparticles , Nano Powder Silicon ,Zno Nanorod . Hongwu Nano Factory is a Chinese company that produces and sells nanomaterials, founded in 2002, has more than 20 years of experience. If you need to buy any inorganic nano powders and nanoparticles applicated in these fields such as antibacterial materials, conductive materials, battery materials, thermal conductive materials, flexible materials, Reinforced / toughened materials, thermal insulation materials, polishing materials, wave absorbing materials, catalysts, solar energy materials, filler, pigment etc. Please feel free to contact us! We also provide test data for Certificate of Analysis, Material Safety Data Sheet, and x-ray diffraction. Professional, attentive, win-win! The product will supply to all over the world, such as Europe, America, Australia,Zambia, Uruguay,Belgium, Bulgaria.Customized & ISO certified & Factory prices & Worldwide shipping.