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Workers operate on the old assembly line that was built in the 1960s to make train carriage wheels at Ma Steel in Maanshan, China. With an additional plant that opened last year, Ma Steel is the world's largest producer of train carriage wheels with an annual capacity of 1.1 million units..29 Dec 2008.
Workers operate on the old assembly line that was built in the 1960s to make train carriage wheels at Ma Steel in Maanshan, China. With an additional plant that opened last year, Ma Steel is the world's largest producer of train carriage wheels with an annual capacity of 1.1 million units..29 Dec 2008.