给付定金的一方不履行合同的，无权请求返还定金。

If the party that pays the deposit fails to perform the contract, it shall have no right to reclaim the deposit.

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给付定金的一方不履行债务的，无权要求返还定金；接受定金的一方不履行债务的，应当双倍返还定金。

If the party who leaves the deposit defaults, he shall not be entitled to demand the return of the deposit; if the party who accepts the deposit defaults, he shall repay the deposit in double.

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我国《产品质量法》第40条的规定在性质上应为瑕疵给付责任，属于债务不履行的一种表现形态；

This paper suggests that the Article 40 in the Product Quality Law should fall within the liability of flaw payment.

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