This Small Electrostatic Spray Gun is designed for laboratory small electrostatic powder spraying tools, including small - amount powder spraying, powder multi - layer spraying experiments, corrosion tests on the metal surface of materials, small - amount color - change DIY electrostatic spraying, and other laboratory powder spraying requirements. It is small, light, and portable for operation, allowing for flexible movement in the laboratory. With an internal DC12V lithium - battery power supply and gas pump, it is easy to carry out and suitable for spraying proofing of small parts or small areas.