A Long March-2C carrier rocket carrying three low-orbit communication test satellites blasts off from the Jiuquan Satellite Launch Center in northwest China, May 20, 2022. The three communication satellites were launched at 6:30 p.m. (Beijing Time) and have entered the planned orbit. (Photo by Wang Jiangbo/Xinhua)

China successfully sent three low-orbit communication test satellites into space from the Jiuquan Satellite Launch Center in northwest China Friday.

The three communication satellites were launched by a Long March-2C carrier rocket at 6:30 p.m. (Beijing Time) and have entered the planned orbit.

These satellites will carry out tests and verifications of in-orbit communication technologies.

The launch marked the 421st flight mission of the Long March series carrier rockets.

A Long March-2C carrier rocket carrying three low-orbit communication test satellites blasts off from the Jiuquan Satellite Launch Center in northwest China, May 20, 2022. The three communication satellites were launched at 6:30 p.m. (Beijing Time) and have entered the planned orbit. (Photo by Wang Jiangbo/Xinhua)

A Long March-2C carrier rocket carrying three low-orbit communication test satellites blasts off from the Jiuquan Satellite Launch Center in northwest China, May 20, 2022. The three communication satellites were launched at 6:30 p.m. (Beijing Time) and have entered the planned orbit. (Photo by Wang Jiangbo/Xinhua)

A Long March-2C carrier rocket carrying three low-orbit communication test satellites blasts off from the Jiuquan Satellite Launch Center in northwest China, May 20, 2022. The three communication satellites were launched at 6:30 p.m. (Beijing Time) and have entered the planned orbit. (Photo by Wang Jiangbo/Xinhua)