Electrophoretic coating is a method of painting that utilizes an external electric field to direct the migration and deposition of particles such as pigments and resins suspended in an electrophoretic liquid onto the surface of one of the substrates.

The principle of electrocoating was invented in the late 1930s, but the development and industrial application of this technology did not occur until after 1963. Electrocoating is a special method of forming a coating film that has developed over the past 30 years and is a practical construction technique for water-based coatings.

Features such as water solubility, non-toxicity, and ease of automation control have rapidly gained widespread application in industries like automotive, construction materials, hardware, and home appliances.