All of our core technical team members have 15+ years experience in R&D and production. Our sales, business operations and logistics teams are staffed with experienced professionals to provide friendly and timely support and services to our customers. 20nm Au solution, Double Wall Carbon Nanotube , 100-200nm Magnetic Iron Oxide Nanoparticles , Ceramic Catalyst Substrate ,Nano Copper . 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,Paraguay, Ukraine,Congo, Israel.Get more feel free to contact us.