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400 tons per hour stone production line

Comparative advantage runs the same way English workers who have an opportunity cost of 150 sweater per scone 1 sweater per hour divided by 50 scones per hour have a comparative advantage in scone production over Scottish workers who have an opportunity cost of 120 sweater per scone 2 sweaters per hour divided by 40 scones per hour

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Kexue Revenue, High and New Technology Industrial Development Zone, Zhengzhou, China

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