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China and Germany are expected to uphold free trade and multilateralism and create new opportunities for bilateral cooperation in manufacturing and innovation, experts said ahead of German Chancellor Angela Merkel's 11th visit to Beijing, which begins on Thursday.

China and the US together account for 40 percent of global GDP, nearly 40 percent of global manufacturing output and around 25 percent of the world's total trade volume, according to the Chinese Academy of International Trade and Economic Cooperation.

China National Petroleum Corporation has also been stepping up natural gas supplies from both domestic fields and abroad to meet customer demand. It has recently made a major breakthrough in China's northwestern Tarim Basin, via a sizable discovery of gas in the Zhongqiu-1 exploration well.

China Eastern Airlines said that its total capacity in the countries included in the Belt and Road Initiative has increased more than 45 percent in the past three years.

China Petroleum and Chemical Corp is one of China's largest producers of hydrogen, producing over 3 million metric tons last year, mostly made from fossil fuels or produced as a by-product of its refining and chemical operations. For example, Sinopec's Shanghai hydrogen refueling stations are supplied by purified by-product hydrogen from the Gaoqiao petrochemical facility based in the city.