When both of them opened, domestic copper was basically based on the trend of copper, because the London Futures Exchange reflected a global supply and demand relationship. However, London is closed, and reopening may be based on domestic trends.

There is no absolute relationship between the two prices: 1: 1, because the situation of domestic spot trading market has certain influence on the price of domestic futures. For example, Luntong fell, but the domestic spot price did not fall, and the market also recognized the price. Then the domestic futures price will at least fall less than that of Rentong, that is, the ratio of Rentong to Shanghai Copper.

Both belong to commodity futures. Commodity futures is a kind of futures contract with physical goods as the subject matter. It is a standardized agreement for buyers and sellers to buy and sell a certain number of physical goods at the price agreed at the time of signing on an agreed date in the future. Commodity futures trading is a standardized contract trading method for buying and selling specific commodities on futures exchanges. The variety of commodity futures trading is increasing with the development of trading. From the traditional futures of agricultural products such as cereals and livestock products, it has developed into futures trading of various non-ferrous metals, precious metals and energy.