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China National Petroleum Corp, the country's largest oil and gas producer by annual output, produced 103.3 billion cubic meters of natural gas in 2017, a year-on-year increase of 5.3 percent.

China also has to deal with a lot of challenges, at the heart of which is the environment. Today, we must address important and urgent questions about how to generate, deliver and use energy in more intelligent and efficient ways.

China and Japan are making all-out efforts to combat the novel coronavirus pneumonia outbreak, Zhao said at a daily news conference, adding that both sides must ensure the state visit will take place at a time and in an environment and atmosphere that are most appropriate for its success.

China First Heavy Industries Co, which supplies technical equipment, high-tech products and services for a number of industries, including steel, nonferrous metals, electrical power, energy and automobiles, suffered financial losses in 2016 but has seen a notable jump in net profits since 2018, after it steadily deepened its supply-side structural reform and adjusted its operating model.

China Energy has been working on promoting hydrogen production and utilization in China.