90%。 The essence of soybean meal is soybean protein isolate, which is completely protein and 90% protein extracted from low-temperature dissolved soybean meal. As a by-product of soybean oil refining, soybean meal is also an important futures commodity. As the feed of protein, it is the staple food of livestock and poultry, and it is not easy to be replaced. As an important futures trading product, its price fluctuates widely and has great influence.