Berlin, September 23rd—Liu Jianchao, Minister of the International Department of the CPC Central Committee, visited here today BMW's motorbike factory in Berlin. Helmut Schramm, Director of BMW Group Plant Berlin, provided an overview of the factory's production and operations. Schramm said that China is one of its key overseas markets and a crucial partner, and expressed the willingness to further strengthen collaboration with China. Liu said, China remains committed to expanding high-level opening-up, and BMW and other German companies are welcome to constantly invest and operate in the Chinese market, so as to strengthen mutually beneficial cooperation and achieve common development.