A.D/P AT SIGHTB.D/P AFTER SIGHTC.D/A AFTER SIGHTD.D/P·T/R
A.開證前B.付款后C.開證后到付款前D.簽訂合同前
A.出口商B.保險(xiǎn)公司C.出口保理商D.進(jìn)口保理商