Canola oil, sixty dollars a barrel and ninety dollars a barrel of canola oil, what is the difference?

Hello about canola oil 60 yuan a barrel and 90 yuan a barrel of canola oil where the difference in fact really I am not sure but I sometimes understand a reason to buy cheap canola oil to eat it will always have a taste I have because of this situation before so that I generally buy expensive at least buy 70 or 80 I will not buy 50 or 60 40 or 50 Generally speaking, only the price is a little bit higher he may be the refining side refining more pure some or processing better some and well there may be that some of the rapeseed he may be high-quality rapeseed and this ah Sai selected not screened some may be screened may be he hit out of the oil refining out of the oil is better, but there is no filtering may be fried out of the oil is not so good so that the difference may be in the place of these This is just my own point of view that you can ask someone else to ask or ask the The professional