A —enquiry B —agreement to pay C —letter of intent D —blanket order E —sample order F —delivery instructions G —delivery schedule H —delivery just-in-time I —delivery release J —certificate of origin K —dangerous goods declaration L —shipping instructions M —dispatch order N —collection order O —sea waybill P —goods declaration for exportation Examples：(E) 样品订单 (H) 按时交货 51．( ) 交货计划表 ( ) 装运说明 52．( ) 询价单 ( ) 发运单 53．( ) 交货说明 ( ) 出口货物报关单 54．( ) 意向书 ( ) 支付协议 55．( ) 危险货物申报单 ( ) 原产地证书