Electrophoretic coating is a common technology for coloring product shells, which can be colored more evenly than spraying. What we call electrophoretic coating is an electrophoretic coating technology that immerses the object to be coated in a water-soluble coating as an anode (anodic electrophoresis), sets a corresponding cathode, passes direct current between the two poles, and relies on the physical and chemical effects generated by the current to evenly apply the coating on the object to be coated. Electrophoretic coating uses electrophoretic coating processing, which is usually also called water-soluble coating. Electrophoretic coating processing and distilled water must be diluted in a certain proportion before use.

Electrophoretic coating generally includes four simultaneous processes:

1. Electrophoresis: Under the action of a DC electric field, positively and negatively charged colloidal particles move in the negative and positive directions, also known as swimming.

2. Electrolysis: Redox reactions are carried out on the electrodes, and oxidation and reduction phenomena are formed on the electrodes instead.

3. Electrodeposition: Due to electrophoresis, the charged colloidal particles that move to the vicinity of the anode release electrons on the surface of the template and precipitate in an insoluble state. At this time, the paint film is formed.

4. Electroosmosis: Under the action of the electric field, the solid phase does not move, while the liquid phase moves. The electroosmosis gradually discharges the water contained in the paint film to the outside of the coating film, and then forms a dense paint film that almost cannot pass current, has extremely low water content, and has a very high resistance.