continue on to further improve, to make sure product top quality in line with market and consumer standard requirements. Our firm has a excellent assurance program have already been established for China Tough Coil Nails, Black Carbon Steel Machete, 15 Degree Stainless Steel Coil Nails, Tightening Barbed Wire,Prison Razor Wire. We are looking forward to establishing long-term business relationships with you. Your comments and suggestions are highly appreciated. The product will supply to all over the world, such as Europe, America, Australia,Russia, Russia,Zurich, Jamaica.Our Company has professional engineers and technical staff to answer your questions about maintenance problems, some common failure. Our product quality assurance, price concessions, any questions about the products, Please feel free to contact us.