Rechargeable wifi router made in China Beijing Esound Technology Co., Ltd. is a national high-tech enterprise and a Beijing-based specialized and new small giant enterprise. The company focuses on the R&D and sales of 4G/5G mobile communication products and intelligent terminal devices. It has an IoT software R&D center in Beijing and a smart hardware product R&D center in Shenzhen, as well as a customer service and cloud data center in Huhehot. It is dedicated to providing simple, flexible, intelligent, http://www.flymodem.net/