Photo taken on April 19, 2016 shows some space station's components printed by a micro-g 3D printer at a research center in southwest China's Chongqing Municipality, April 19, 2016. The Research Center for Additive Manufacturing (3D Printing) Technology of Chongqing Institute of Green and Intelligent Technology announced on Tuesday that the first micro-g 3D printer was successfully developed. (Photo: Xinhua/Liu Chan)
