Palm oil fractionation equipment separate palm oil into soft fat, hard fat and intermediates by controlling the crystallization point. The melting point of hard fat is 50°C and that of soft fat is 24°C.

Sunflower oil is a kind of high-quality edible oil. it is rich essential fatty acids for the human body, unsaturated fatty acids up to 85 to 90 percent, and the content of linoleic acid is 65%, which has high nutritional value.

The wax in edible oil is mainly formed by the reaction of higher fatty alcohols and higher fatty acids, in addition to some higher free fatty alcohols, fatty acids and hydrocarbons.

Corn germ oil contains a small amount of wax, which will be precipitated as cotton wool at 25°C, which can easily affect its perception. Moreover, the corn oil that has not undergone dewaxing will feel a peculiar smell when eating, a taste of raw corn, which is also a factor that causes the low quality of corn germ oil.