Aerospace Technology Communication (Shenzhen) Co., Limited (Castel Group for short), founded in 1997, is a subsidiary of China Aerospace Science and Technology Corporation (CASC). As one of the co-founders of China GPS Association, Castel Group has over 10 years' experience in GPS and LBS application, wireless, communication and access, and is engaged in the R&D and manufacture and provisioning of customized integrated solutions. Core Business To satisfy evolving demands of customers from ...