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China National Petroleum Corp, the country's largest oil and gas producer by annual output, has been increasing its presence in the Arctic region's natural gas sector by participating in the Yamal LNG project with Novatek, Russia's independent natural gas producer, which will ensure that China gets more than four million tons of LNG each year when the project is in full operation.

China and South Africa collaboration in technological cooperation, industrial parks, scientific research and construction of joint research platforms also was highlighted.

China Mobile announced plans to build a 5G network in advance in the area and assure complete optical access as well as other topnotch telecommunication infrastructure.

China Petrochemical Corporation topped the list, followed by the State Grid Corporation of China and China National Petroleum Corporation.

China Railway Engineering Equipment Group Co, the country's biggest manufacturer of tunnel boring machines by both production capacity and revenue, will ship eight sets of the giant machines to international markets including Israel and Singapore in the second half of this year, its chairman said.