A small proportion of CPC's contracts are of the "cost and freight" (CFR) variety where the seller is responsible for shipping the goods to a port designated by the buyer. But most of the contracts are "free on board" (FOB) where the buyer's vessel goes to a port designated by the seller to load the oil.
中油少數契約採 CFR 模式，由賣方負責運送到台灣指定港口，但大多數契約則屬 FOB 模式，由買方到賣方指定的港口去裝油，途中運送則由買方自行負責。