High Boiling Point Solvent--High Boiling Point Dimethyl Dibasic Acid Ester (HDBE), whose main components are Dimethyl Succinate, Dimethyl Glutarate, and Dimethyl Adipate, appears as a non-toxic, colorless, transparent liquid with a very faint ester flavor, and belongs to a kind of environmentally friendly high boiling point solvent. As an environmentally friendly coating solvent, it not only has good solvency, but also has the characteristics of low volatility, easy flow, high safety, non-toxicity, and photochemical stabilization, etc. It is mainly used as a high-boiling solvent in the coatings industry, and is able to replace isoflurane, glycol ether, and cyclohexanone, etc., which have high toxicity, and it is suitable for baking synthetic resin coatings as well as high temperature and fast-drying coil steel coatings, sheet coatings, and canned goods coatings. It is suitable for baking-type synthetic resin coatings, high-temperature and fast-drying coil coatings, sheet coatings, and can interior and exterior coatings.