Laboratory needs to prepare a huge number of uniform coating test panels during the coating performance testing, and the coating results of traditional manual spraying mainly depend on the operator’s experience and skills. So it is not only difficult to ensure the uniformity of the coating (especially when spraying a large area of tested panel), but also it has a certain risk to harm operator's health and environment because of improper spraying operation. In view of this situation, Biuged developed a Horizontal Automatic Panel Spray Cabinet equipped with a water tank (water curtain can be customized), which is easy to operate and efficient. When spraying horizontally, the mist is downward and absorbed by the water tank, so that the diffusion is less.