What's the difference between automatic car washing machine with brush and without brush?

Brushes are mainly used to increase the friction of car washing instead of manual wiping. The disadvantage is that sometimes poor quality products are harmful to cars. Brushless products are mainly washed with water and detergent. The disadvantage is that it needs manual wiping. Usually, it is chosen according to the business purpose. Individual investors suggest no brush, low investment and low after-sales maintenance cost. Wanxi water dragonfly car washer, 10 years maintenance-free high-pressure water pump.