附函 meaning in English

accompanying letter

In response to your request , we are pleased to send under separate cover our new catalogue of tree , roses and shrub
根据贵公司要求，现附函另寄上我方的树木、玫瑰以及灌木的新目录册。
The amount of each negotiation / drawing must be endorsed on the reverse of this credit and negotiation / presentinig bank must certify the same on the covering schedule
每次提款必须在信用证的背面记录，议付行必须在附函上证明此事。