1. Listed companies will suffer huge losses due to low operating and operator selection costs, or price fluctuations caused by industries inconsistent with the oil industry chain and energy structure.

2. Lack of basic financial instruments. The United States is a big oil producer, and nearly 2,000 listed companies went bankrupt. Because the distribution of listed companies is not exactly the same, oil prices can continue to skyrocket and fluctuate greatly.

3. Investors participate in speculation, and it is difficult to avoid price risk through futures hedging.