Yu Feng Technology Co., Ltd. as a manufacturing and trade enterprise with partner factories in mainland China's Shenzhen City. We take pride in the development and manufacture of high quality electronic products with distinctive appearances, and specialize in the sourcing and export of all kinds of electronic products.our products are dog training matï¼Œ Ultrasonic Bark Control Collar ,anti-bark collarï¼Œremote dog training collar ,Bicycle Dog Leash .Dog Electronic Fence Now working with clients in Europe, North America, Australasia and other areas, our highly qualified staff guarantee to supply comprehensive services for all customers