Legal basis: Civil Code of People's Republic of China (PRC).
Article 511 Where the contents of a contract are not clearly prescribed by the parties and cannot be determined in accordance with the provisions of the preceding article, the following provisions shall apply:
(a) the quality requirements are not clear, in accordance with the mandatory national standards; If there is no mandatory national standard, it shall be implemented in accordance with the recommended national standard; If there is no recommended national standard, it shall be implemented in accordance with industry standards; If there is no national standard or industry standard, it shall be implemented according to the usual standard or the specific standard that meets the purpose of the contract.
(2) If the price or remuneration is not clear, it shall be performed according to the market price at the place of performance when the contract is concluded; If government pricing or government-guided pricing should be implemented according to law, it shall be implemented in accordance with the provisions.
(3) Where the place of performance is unclear, if payment is made in currency, it shall be performed at the place where the party receiving the currency is located; Where real estate is delivered, it shall be performed at the place where the real estate is located; Other targets shall be performed at the place where the party performing the obligations is located.
(4) If the time limit for performance is not clear, the debtor may perform at any time, and the creditor may also request performance at any time, but the other party shall be given the necessary preparation time.
(5) If the method of performance is not clear, it shall be performed in a way conducive to the realization of the purpose of the contract.
(six) if the burden of performance expenses is not clear, it shall be borne by the party performing the obligation; The performance expenses increased due to the creditor's reasons shall be borne by the creditor.
Article 512 For an electronic contract concluded through an information network such as the Internet, if the subject matter is the delivery of goods and delivered through express logistics, the time when the consignee receives it shall be the delivery time. The object of an electronic contract is to provide services, and the time specified in the generated electronic certificate or physical certificate is the time to provide services; If the time is not specified in the above vouchers or the time specified is inconsistent with the actual time of providing services, the actual time of providing services shall prevail.
If the subject matter of an electronic contract is delivered by online transmission, the time when the subject matter of the contract enters the specific system designated by the other party and can be retrieved and identified is the delivery time.
Where the parties to an electronic contract have otherwise agreed on the manner and time of delivery of goods or provision of services, such agreement shall prevail.