Solvent oil is one of the five major categories of petroleum products. Solvent oil has a wide range of uses. Larger amounts of recommended coating solvent oil (commonly known as paint solvent oil), followed by edible oils, printing inks, leather, pesticides, pesticides, rubber, cosmetics, spices, medicine, electronic components and other solvent oils. At present, there are about 400-500 kinds of solvents on the market, of which solvent oil (hydrocarbon solvents, benzene compounds) accounts for about half.