Letter of credit must bear a valid period which may be longer than the shippingperiod, bur the shipping date should not be later than the validity date of the credit.
信用证必须有有效期，信用证的有效期可以晚于装运期，但装运期却不能迟于有效期。
2
Article55a passenger ship certificate shall be effective for a period as granted by the shipping administration authority depending on her seaworthiness; however it shall not exceed one year.
第55条(客船证书之有效期间)客船证书之有效期间，由航政主管机关视其适航性核定之。但不得超过一年。
3
The Tenth Five-Year Plan period is a crucial period for building Shanghai into an international shipping center.