There are two contract models that CPC uses for the purchase of crude oil from overseas. About 60 % is done through long-term forward contracts. These are agreements for the continuous purchase of crude over a ten-to-20-year period. In the fourth quarter of each year the amount and price is negotiated for the following year.
中油向外購買原油有兩種契約模式，約 6 成是透過長期合約（簡稱「期約」），即以 10 至 20 年為期的連續採購合約，每年第 4 季議定下年度的採購數量與價格。