1, delivery, delivery refers to the futures contract expires, according to the rules and procedures of the futures exchange, the two sides of the transaction through the transfer of ownership of the goods contained in the futures contract, to end the contract liquidation process;

2. Closing positions refers to futures traders buying or selling futures contracts with the same variety, quantity and delivery month, but in the opposite direction, and closing futures transactions;

3 warehouse receipt refers to the standardized delivery certificate issued by the delivery warehouse and recognized by the futures exchange;

4. The commission rate refers to the index used to measure the relative strength of the order within a period of time;

5. Liquidation refers to the liquidation measures taken to prevent excessive losses because the position held in the transaction is contrary to the price trend;

6. Position refers to the number of trading contracts held in the transaction;

7. Basis refers to the difference between the prices of different or the same varieties in different contracts or markets;

8. Counterknock refers to the behavior of exchange members or customers who deliberately collude to trade or buy and sell with each other in a pre-agreed way or price in order to create market illusion, in an attempt or actual way to seriously affect futures prices or market positions.