On October 28, 2013, BPEX and Bank of China jointly launched Great Wall-BPEX Discount Card. The card can enable its holders to enjoy discount in gas station in cooperation with BPEX and to participate quotation spot trading of the refined oil in the future following their agreement signing with Bank of China. It helps to fulfill the function of oil price locking so as to ease the pressure of oil costs rise borne by consumers in the time of high oil prices. The card is available in Beijing in its first phase of launch, covering over 40 gas stations. Now, Xuanwu branch of Bank of China and other 16 branches are open for its application. More gas station will join in this endeavor with nationwide expansion of negotiations of BPEX.