Mainly rebar, wire futures, futures and spot, prices have been fluctuating, and the trend of ups and downs is the same. When the spot falls, futures also rise and fall. The representative of futures trading corresponds to the physical contract. When you think the real thing will go up, you can buy a call contract to make money. Buying a put contract can also make money when the real thing falls. And futures use margin trading, which is small and wide. Jinyuan futures