RTB Electronics Co., Ltd. is a professional telephone/GPS manufacturer with over eight years of experiences. Our ISO 9001-certified factory is located in Liuyue, Henggang, Shenzhen, China Occupied 2,000 square meters of area. It is equipped with the latest, imported machines, e.g. sunshine. Not only all production processes are strictly handled in factory, including design, injection, coating, molding, tooling and assembling, but also we make every effort in purchasing process, packaging process and shipment arrangement process. Please be assured that your order will receive our careful attention. Product Category GPS Navigaor (New) Caller ID Phone Two-line Phone Call Waiting Phone Answering & Recording Phone SMS Phone Slimline phone Caller ID Box Other Phone Product Research and Development Our team of qualified designers and engineers are constantly innovating and developing new