Account crude oil trading varieties include US dollar international crude oil, RMB international crude oil, US dollar North American crude oil and RMB North American crude oil. Among them, the account international crude oil is quoted according to the Brent crude oil futures contract price of the New York Mercantile Exchange or Intercontinental Exchange, and the account North American crude oil is quoted according to the West Texas light sweet crude oil futures contract price of the New York Mercantile Exchange.