The Long March-2F carrier rocket that will be used for the upcoming launch of the Shenzhou-9 manned spacecraft has undergone technical advancements to improve its reliability and safety, a spokesman with the country's manned space program said Thursday.
Assembly and tests will be carried out on the rocket at the Jiuquan Satellite Launch Center, China's state-run news agency Xinhua reported.
The Shenzhou-9 manned spacecraft has been at the launch center since April 9 and is being prepared for its manned rendezvous and docking mission with China's orbiting Tiangong-1 space module, the spokesman said.
The Tiangong-1 was launched on Sept. 29 and an unmanned Shenzhou-8 spacecraft docked with it in early November.
China will launch the Shenzhou-9 sometime between June and August, Xinhua reported.