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China appealed to the WTO in 2012 to contest US anti-subsidy tariffs on Chinese exports including several metal products, steel tire rims, solar panels, wind power equipment and aluminum goods.

China has become the world's largest crude and gas importer, importing 440 million metric tons of crude oil and 125.4 billion cubic meters of gas in 2018, up 11 percent and 31.7 percent year-on-year. The foreign oil and gas dependence ratio reached 69.8 percent and 45.3 percent, according to China National Petroleum Corp's Economics and Technology Research Institute.

China cherishes the conventional monetary and fiscal policies and will not adopt deficit monetization or negative interest rate policies, said Guo Shuqing, chairman of the China Banking and Insurance Regulatory Commission in Shanghai on Thursday.

China has imposed a fishing ban in the South China Sea since 1999, aiming to protect natural resources and ensure the fishing industry's sustainability, a fishery administration official at the Ministry of Agriculture said.

China has made breakthroughs in key technologies for nuclear power and unconventional oil and gas and achieved innovations in sectors such as smart grids, electric vehicles and energy big data, Zhang said.