The delicate foam produced by the foam nozzle can penetrate into the tiny gaps and depressions on the vehicle surface, effectively remove stains and impurities, and improve the cleaning efficiency. Compared with the traditional direct water spray cleaning, foam cleaning can reduce water consumption and waste of water resources, which conforms to the environmental protection concept of modern society. The detergent ingredients in the foam are fully diluted and dispersed, reducing the direct impact and wear on the paint, and helping to protect the gloss and integrity of the paint. Rich foam covers the vehicle surface, making the car washing process more intuitive and interesting, and improving the user's car washing experience.

The core of foam nozzle is the design of its internal structure. It uses Venturi effect or mechanical agitation to mix liquid (such as cleaning agent, fire extinguishing agent, pesticide, etc.) with air and fully refine it to form a large number of tiny bubbles. These bubbles are evenly distributed in the liquid, forming a lightweight, volume expanding foam. This conversion not only increases the surface area of the liquid, but also enhances its adhesion and permeability, enabling it to act more effectively on the target surface.