The delivery unit of fuel oil standard contract is 50 tons, and the delivery quantity must be an integer multiple of the delivery unit. 180CST fuel oil or other fuel oil with better quality than this standard refers to a hydrocarbon mixture made of petroleum, which should not contain inorganic acids and waste lubricating oil, and should not contain any additives or chemical wastes that endanger the safety of ships or adversely affect the operation performance of machines, which is harmful to human health and pollutes the air, but it is not excluded to add a small amount of additives to improve some functions of fuel oil.
Futures is a trading method that spans time. By signing the contract, the buyer and the seller agree to deliver the specified quantity of spot at the specified time, price and other trading conditions.
Futures are concentrated in futures exchanges and traded through standardized contracts. Some futures contracts can be traded through over-the-counter trading, which is called over-the-counter contract. According to the types of subject matter, futures can be divided into commodity futures and financial futures.