Get more feel free to contact us. nano iron, Silver Nano , Antibacterial Solution , Yellowish Brown Colloidal Silver ,Ito Nano Powders . Hongwu focus on R&D, production, supply and after-sales of nano particles. Our company is established in 2002, with manufacture base locates in Xuzhou city, Jiangsu province china, is among China’s earliest companies enter into nano particles advanced material industry. The product will supply to all over the world, such as Europe, America, Australia,Tanzania, Paraguay,Nigeria, Ukraine.Carbon Nanotubes (SWCNT,DWCNT,MWCNT and functioned nanotubes) ;