Generally, the vegetable oil is mixed with palm oil at a price of about 6, yuan per ton. The specific proportion is not clear. It is much better to mix palm oil in summer than in winter. Some even mix swill oil and waste oil.

At present, the purchase price of rapeseed here is 4, yuan per ton, and more than 4, yuan will be sold to oil plants. The fourth-grade vegetable oil is 8,5-8,6 yuan per ton, and the rapeseed meal is about 1,8-2, yuan per ton. At present, the oil factory mainly uses leached oil, because the oil yield of leaching is 4-6 percentage points higher than that of mechanical pressing. Now, we calculate the oil yield of rapeseed as 36%:

Cost: 1 kg rapeseed ×2.1 yuan (the purchase price of rapeseed per kilogram) =21 yuan

1 kg rapeseed ×36% oil yield =36 kg rapeseed oil ×4.3 yuan (the ex-factory price of rapeseed oil).

after rapeseed is leached, rapeseed meal =1 kg rapeseed -38 kg rapeseed oil =62 kg (we don't calculate any moisture here) ×1 yuan (ex-factory price of rapeseed meal) =62 yuan

154+62=216.8 yuan-cost 2 yuan =16.8 yuan, and basically there is no profit if workers' wages, water and electricity are included! Then we have to adulterate the oil! Here I suggest that you don't eat bulk oil! It is best to eat bottled oil like Arowana and Fulinmen!