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Chongqing Changjian Technology Co.,Ltd has over 10 years of experence in electronic product manufacturing,have a strong, high quality staff team, independent research and development studio and assemly workshop In Shenzhen, China.Provide high quality satellite positioning information terminal to receive and transmit equipment production (known as GPS tracking device), the capacity of 100000 units per month.Company has three service platform as the software support, can satisfy 20000 people online vehicle positioning information management solutions, the company set research and developement, production and distribution in one. Major marketing in China, South America, the Middle East and Southeast Asia.