Shenzhen Castel Wireless Telecommunications Co., Ltd. (hereinafter referred to "castel wireless"), is a subsidiary of casil telecommunications holdings limited (Hong Kong stock listed, listing no.: 1185, a co-founder of China GPS association). Our company has been devoted to the application of GPS technology, RFID technology and wireless broadband access technology with the research and production of related products.

With 10, 000sqm production facilities, "castel wireless" produces and manufactures wireless communication products, wireless broadband, GPS trackers, GPS navigators, GPS modules, GPS receivers and car alarms. Our company attained ISO9001: 2000 quality management system certification in 2006.