1. Overseas futures refer to futures transactions where the exchange is located outside Chinese mainland.

2. The products in the exchanges in the United States, Britain and other countries are usually traded futures contracts.

3. Futures contracts refer to standardized contracts formulated by futures exchanges and agreed to deliver a certain number of subject matter at a specific time and place in the future.

4. Some American futures contracts, such as soybeans and copper, will have an impact on domestic futures prices. Domestic investors can refer to the external market.

5. Large manufacturers and traders can also hedge the spot trading losses according to the external market.