It's sometimes a hedge, enabling a manufacturer to cover himself against a rise in the price of his raw material.
有时候叫做套头交易，这可以使制造商避免因原料涨价而受到损失。
Due to the tight supply of raw material coal and the rise in its price, the production cost of ammonia has increased by a big margin.
由于原料煤供应紧张及价格上涨，造成合成氨生产成本大幅度上升。
The depletion of global resources causes the rise in price of raw material, which makes the management cost of the product manufactories rise.
全球资源枯竭导致包装物的原材料价格上涨，使得产品制造商经营成本上升。
The depletion of global resources causes the rise in price of raw material, which makes the management cost of the product manufactories rise.
全球资源枯竭导致包装物的原材料价格上涨，使得产品制造商经营成本上升。
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