Rapeseed meal price contract. Rapeseed meal is the product of oil extraction. Rapeseed is black and yellow. The rapeseed meal squeezed from yellow rapeseed is called yellow rapeseed meal, and the rapeseed meal squeezed from black rapeseed is called black rapeseed meal. 230 1 contract is a price contract proposed by Zhengzhou Commodity Exchange, which limits the price of rapeseed meal and prevents the price from being too high.