Coke is a kind of charcoal. It is mainly used for blast furnace ironmaking and smelting of nonferrous metals such as copper, lead, zinc, titanium, antimony and mercury, and plays the role of reducing agent, heating agent and material column skeleton.

Futures are relative to spot. Futures are the subject matter that is bought and sold now, but will be settled or delivered in the future. This subject matter can be gold, crude oil, agricultural products, financial instruments, financial indicators and other commodities.