在一个简单的市场模型中，市场的力量将促使生产者扩大生产，直到消费者愿意支付的价格等于生产者的直接生产成本为止。
As before, market forces cause production to expand until the seller's direct cost for the last unit sold is exactly the value of that unit to the buyer.
食物安全商标的建立：使消费者认同产品安全的重要性，愿意以高价支付或支付安全成本。
Establishment of a brand for food safety: Make consumers recognize product safety, pay the premium on it, or pay the cost for safety maintenance.
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