合同法第四十四条规定:“依法成立的合同.自成立时生效。法律、行政法规规定应当办理批准、登记等手续生效的,依照其规定。”一般而言,依法成立的合同的成立时间就是生效的时间。但也有例外的情况,一是当事人对合同的效力约定附条件或者附期限生效,那么自条件成就或者期限届至时生 Article 44 of the Contract Law stipulates: “The contract established according to law shall have effect since its establishment. Laws and administrative regulations shall apply for the approval and registration and other formalities in force, in accordance with its provisions.” In general, contracts established according to law The establishment of the time is the effective time. However, there are some exceptions. The first is that the parties agree on the validity of the contract or the effective date of the contract, then from the time of the conditional achievement or the expiration of the term