Prof. Jinsong Leng attended the 20th International Conference on Composite Materials (ICCM20), which was held on July 19-24, 2015, Copenhagen, Denmark, and gave a Plenary Speech about “Stimulus-responsive polymer composites: a path towards active shape changing structures”. More than 1800 researchers and scientists in the field of composite materials gather in Copenhagen, Denmark for ICCM 20 under the title: ”Sustainable Composite Solutions to Global Challenges”.