The specific reasons are as follows:

Commodity palm and palm oil futures are actually the same variety, which refers to palm oil futures launched by domestic big businessmen, so they are the same.

Palm oil and soybean oil are both oils and fats, but they are the main oils and fats with large consumption in China. From the point of view of consumer terminals, they can be substituted for each other in some aspects. If the price of palm oil is too high, consumers can switch to lower-priced soybean oil, and when the price of soybean oil is high, consumers can also use palm oil instead. Therefore, they can replace each other to some extent, and the price rise and fall of one variety will be transmitted to another variety to some extent, affecting another variety.