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"Chinese consumers in particular welcome new technology and are very open to trying the new and the best," Tsien said.

"Cities are more open to multi-operator environments, which would foster competitiveness because everyone will be trying to give better service and get more users," Panozzo said.

"Currently China has 200 to 300 million middle-income earners. By 2020 that figure is projected to surpass that of Europe," said Ding. "There is definitely a strong call for supply from premium brands globally."

"China still has a lot of opportunities to develop itself. We have a very big and important business here. We double our business in China every five years or so, and we will continue to invest in the largest cities, while expanding in smaller cities."

"China's annual gas production will more than double to 340 billion cubic meters in 2040, with shale gas a major contributor, but consumption is foreseen to grow even faster, reaching 600 billion cubic meters," said the China Special Report of the World Energy Outlook 2017.