Fuel oil, also known as heavy oil and residual oil, is a dark brown viscous flammable liquid with moderate viscosity, good fuel performance and high calorific value. Used as boiler fuel, it has good atomization, complete fuel, less carbon deposition and ash, and less corrosiveness. High flash point, safe storage and use.

Fuel oil is a kind of refined oil extracted from crude oil, which is widely used as fuel for industrial furnaces such as ship boilers, heating furnaces and metallurgical furnaces. Fuel oil is mainly composed of petroleum pyrolysis residue and straight-run residue, which is characterized by high viscosity and contains many non-hydrocarbon compounds, resins and asphaltenes. The main technical indexes of fuel oil are viscosity, sulfur content, flash point, moisture, ash and mechanical impurities.

Fuel oil futures: that is, trading varieties with fuel oil as the subject matter of futures are futures contracts listed and traded in the previous period.