Firstly, be mindful of the frequency of car washing; it should not be too frequent, as this can easily damage the paint on the vacuum cleaner vehicle.
2. When washing the car, use clean water; otherwise, fine sand in the wastewater can scratch the paint. In winter, when temperatures are low, use warm water for washing.
3. Use clean car washing towels; regular towels have strong friction and can easily damage the paint on the vacuum cleaner. Especially in winter, it's important to immediately wipe off the water from the car body after washing to prevent any remaining ice from damaging the paint.
4. Wash your car in a well-ventilated and shaded area. In winter, choose a spot where the sun can shine directly on your vehicle.
5. When washing cars, be sure to properly waterproof certain parts of the vacuum truck, such as the horn, headlights, and door lock holes, to prevent the horn from failing, headlights from fogging up, or the door lock from freezing shut due to water seeping in during winter.
6. Do not wash your car immediately after the vacuum truck has been used in winter. Wait until the engine temperature of the vacuum truck has cooled down before washing to prevent engine damage from thermal expansion and contraction.