According to the market price of crude oil on April 28th, the crude oil futures price for June on the West Texas Intermediate showed US$63.86/barrel, increased by 1.5% in a trading day, and the crude oil futures price for June on the Brent Crude showed US$67.27/barrel, increased by 1.3% from the previous trading day.

Among them, the main reason for the strong increase was benefited by the optimistic attitude from the Organization of the Petroleum Exporting Countries (OPEC) on April 27th, which decided to increase their crude oil production gradually, confidence in the future demand of the world.