分析表明：当零售商仅具有买方垄断势力时，收取通道费会使零售商的利润增加，消费者剩余减少，对社会福利的影响取决于需求函数性质；
Analysis showed that:the case that the retailer both have the buyer and seller power, its welfare losses bigger than the case that only have the seller;
来自中国的证据显示，今天需求减少会导致生产力剩余，旧供应商的出局使得消费者能迅速找到新的供应者。
The evidence from China is that today's lack of demand creates the spare capacity that allows customers to find a new supplier quickly if theirs goes out of business.
来自中国的证据显示，今天需求减少会导致生产力剩余，旧供应商的出局使得消费者能迅速找到新的供应者。
The evidence from China is that today's lack of demand creates the spare capacity that allows customers to find a new supplier quickly if theirs goes out of business.
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