1. Whether the workmanship is exquisite. Pay attention to various details such as water tank, operation panel, user precautions, equipment maintenance tips, etc. Exquisite craftsmanship represents the manufacturer's attitude towards work and reflects their positioning in the future market, indirectly reflecting the overall quality of the machine.

2. How is the workmanship of the machine casing. The shell material of the self-service car washing machine should be made of galvanized steel plate sprayed with plastic, which is corrosion-resistant and not afraid of wind and rain.

3. How efficient is the car washing machine. The efficiency of machines directly affects the revenue of businesses. Therefore, when choosing a car wash machine, it is necessary to pay attention to its equipment self-control, switch control, technical level, and program control level.

4. How is the after-sales service of the car washing machine. No matter how good the quality of the self-service car washing machine is, it also needs good after-sales service. The machine needs periodic maintenance to ensure basic normal working functions. Therefore, the after-sales service team and strength of the enterprise are also important factors that affect the use of self-service car washing machines and the profitability of the store, directly affecting the success or failure of the investment.