1, long-term storage does not deteriorate.

2. Quality can be easily divided and evaluated.

3, the supply is large and it is not easy to be controlled and monopolized by a few people.

There are many buyers and sellers.

5. The price fluctuates frequently

Disclaimer: The above content is a summary or excerpt from the second section of Chapter 4 of the Course of Futures Market published by China Financial and Economic Publishing House.