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Amazon’s Seattle headquarters under construction to accommodate its growing workforce. (GeekWire Photo / Kurt Schlosser)

Among the exhibits were photos of Africa's flagship projects in science and technology, science and technology achievements of South Africa and China and their cooperation results.

Amazon’s self-proclaimed record-breaking holiday season also came with record costs for shipping billions of items to customers’ doors.

America is the world's largest steel importer, buying about 35 million tons in 2017.

Among the 41 sub-sectors, 27 saw higher profits and 14 reported lower earnings.