Soybean oil is taken from soybean seeds, and soybean oil is the most productive oil in the world. The color of soybean crude oil varies with the variety of soybean seed coat.

Soybean is one of the most important grains in China, with a cultivation history of 5000 years. It was called glutinous rice in ancient times. It is the main producing area in Northeast China, and its seeds are rich in plant protein. Soybean is most commonly used for making various bean products, extracting soybean oil, brewing soy sauce and extracting protein. Grinding bean dregs or soybeans into coarse powder is also commonly used in livestock feed.