PetroChina Kunlun Gas Company technicians check valves and pipes at a natural gas transmission station of the Sino-Myanmar pipelines in Kunming city, Yunnan. PetroChina produces two-thirds of China's natural gas and controls nearly 80% of the country's patchy 90,000km gas pipelines. Shutterstock
PetroChina Kunlun Gas Company technicians check valves and pipes at a natural gas transmission station of the Sino-Myanmar pipelines in Kunming city, Yunnan. PetroChina produces two-thirds of China's Show more

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