3 cargo vehicles to serve nation's space program

China will produce two additional types of cargo spacecraft with different functions to service its future manned space station, according to a space program manager.

That will make a total of three, including Tianzhou 1, which is now in space, Yang Baohua, deputy general manager of China Aerospace Science and Technology Corp, said at a news conference on Friday in Beijing.

That spaceship's cargo cabin is hermetically sealed because one of the spacecraft's tasks is to test in-orbit resupply technology, including the transportation of astronauts' necessities that require isolation from space.