Kyland.is the No.1 Chinese Company in Industrial Networking field.We are the most professional manufacturer of Industrial Ethernet Switch, Industrial Media Converter, and Industrial Data Optic Terminal products with ISO 9001:2000 and CE certification our headquarters stay in Beijing, China. Tens thousands of our products have been shipped to more than 20 countries all over the world. now our products are available in South Africa.if you need more information about our products,please browse our English website:www.kyland.cn or contact me directly