BEIJING, Oct. 9 (China Space News) -- China launched a group of four satellites on Wednesday at noon for commercial remote-sensing services, an important step in the development of remote-sensing space technology.

The "Jilin-1" satellites, launched from the Jiuquan Satellite Launch Center in northwest China's Gansu Province, include one optical remote-sensing satellite, two satellites for video imaging and another for imaging technique testing.

All four satellites were developed and produced by Chang Guang Satellite Technology Co., Ltd.

The company will also take charge of commercial operations of the satellites to provide remote-sensing data and relevant products, which may be used for the monitoring, development, and surveying of resources as well as mapping and disaster prevention for domestic and overseas clients, according to the statement.

Wednesday's satellites were carried by a Long March-2D rocket. It is the 213th mission carried out with Long-March-series carrier rockets.