Yes Coal and oil are substitutes for each other; There is a positive correlation between them. Once the oil price rises, the coal price will also rise. Recently, stimulated by the sharp rebound of crude oil futures, coal stocks also performed well. Oil is a non-renewable energy source. When the futures price of crude oil rises and the cost of enterprises with large demand for crude oil rises, they will seek alternative energy sources to reduce costs.

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The sharp rise in oil prices should be said to be only a market panic, and the structural supply crisis is far from coming. Although the situation in Libya has been confusing. But judging from the whole oil supply structure in the world, Libya's share is not large. The main problem is that the oil price itself is on the inflation track.

International oil prices rebounded sharply on Thursday, with Brent crude oil futures and US crude oil futures both soaring by more than 10%, recovering the huge lost ground during the global market turmoil earlier this week, which benefited from market speculation that Venezuela called for an emergency meeting of the Organization of Petroleum Exporting Countries, the global stock market rebound and the slowdown in supply, which gave birth to a short covering-style rebound.

In the stock market, the stock price is in a downward trend, and the adjustment phenomenon that the stock price eventually reverses and rises to a certain price due to the rapid decline of the stock price is called rebound. Generally speaking, the rebound of stocks is less than the decline, usually when it rebounds to about one-third of the previous decline, it resumes its original downward trend.

There are relatively many uncertainties in the rebound market, and the market is changing rapidly. When participating in the rebound market, we must clearly understand the essence of the rebound, determine the type of the rebound, measure the future development trend and rising strength of the rebound market, and adopt appropriate investment methods and grasp the scale of intervention accordingly.

Substitution means that there are different relationships between various commodities, so the price changes of other commodities will also affect the demand of a certain commodity. There are two relationships between commodities: one is complementary and the other is substitution. Complementarity means that two commodities * * * satisfy a desire, and they are complementary. For example, tape recorders and tapes are such complementary relationships.

Substitution refers to several commodities that can bring similar satisfaction to consumers. If the price of a commodity goes up, customers will look for commodity B which is cheaper than a commodity and can bring similar satisfaction.

Substitutes and complementary products are contradictory concepts. Substitutes can also be judged according to the sign of cross elastic coefficient. Obviously, when the cross elasticity coefficient is positive, that is, the increase in the price of one product (the decrease in sales volume) will cause the increase in the demand of another product, then these two products are substitutes.