The main varieties of each exchange are different. Dalian Stock Exchange mainly focuses on commodities and ordinary metals. Zhengzhou trading company is mainly engaged in agricultural products, and the quotation of agricultural and sideline products here is the most authoritative in the country, and it is also the main reference index for the state to regulate the prices of agricultural products. Shang Jin Research Institute mainly deals in precious metals, such as gold, silver, platinum and palladium. CICC was established late, and its main trading targets are some emerging varieties, such as stock index futures, treasury bonds futures and interest rate futures.