From Hongwu, you can easily purchase nanoparticles at great prices.We invite you to contact us for further info about our company and our capabilities.At HONGWU, we could be glad to be of service to you. We look forward to your suggestions and feedback. WO3 for catalyst, Antibacterial Solution , 100-200nm Boron Nanoparticles , 1-2um Boron Nanoparticles ,Nanoparticles . 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,Hongkong, Angola,Sri Lanka, Iraq.For more information, just kindly contact us. If you have anything you want to know, we will do our best to answer for you. We can't wait to partner with you.