China has launched a group of four satellites aimed at providing commercial earth observation services. The “Jilin-1” satellites include one spacecraft for high-definition images, one for testing new space technology and another two for video. Data from these satellites will used for monitoring, development, and surveying of natural resources. Apart from this, they will also contribute to mapping and disaster prevention for both domestic and overseas clients. The satellites were developed by Chang Guang Satellite Technology Company, and carried into space by a Long March-2D rocket.