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As a major supplier of geothermal heating in China, the company, which is also the nation's largest oil refiner, aims to boost its geothermal heating capacity to 120 million cu m by 2023, accounting for 40 percent of the domestic market, said Lyu Dapeng, spokesperson of the company.

As for the China market, PTW has won orders from top Chinese companies. Since about four years ago, the company has doubled the revenue growth year-over-year in China. "Year-on-year, we expect this growth to continue," Kirkham said.

As close neighbors with highly complementary economies, China and Vietnam will promote cooperation in infrastructure construction and connectivity, Ruan said.

As a result, the FAA approved the 737 MAX for commercial service without a clear understanding of how MCAS worked and the problems it could pose to pilots who weren't fully trained in its function or how to override it in an emergency, the inspector general concluded.

As a result, an efficient collection channel has become increasingly important for the country, experts said.