Reduced cost was also instrumental in developing steam-powered rolling mills capable of producing finished iron of various shapes and sizes.
降低的成本也有助于那些能够生产不同形状和尺寸的成品铁制品的蒸汽动力轧钢厂的发展。
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A further obstacle is the cost and complexity of exporting finished products - the delta provides quicker access to ports than cities such as Chongqing.
A more efficient tax would be a tax on producers of food, based on the difference between the cost of the ingredients before processing and the price for the finished product.