China is one of the biggest countries in grain and oil production and consumption.The average level of grain production is over 500 million tons per year,which includes 120 million tons of wheat,160 million tons of corn,190 million tons of rice and 30 million tons of oil seeds.Large amount of byproducts has been generated during grain and oil process,and typically constitute of wheat bran,rice bran,corn germ and meal of oilseeds with the annual production of 20 million tons,30 million tons,2 million tons and 50 million tons respectively.
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