We enclose for annual updating a list of your products that have a valid FI certification on December 31,2009.On basis of the register the annual maintenance fee for the FI certification and the certificate holder's base fee are debited.The invoice will be sent to you in February 2010.
特别是" that have a valid FI certification on December 31,2009"是什么意思?2009.12.31到期!?