Many wanted to join the coalition but had made difficulties in choosing the project and wondered what kind of industry and project to choose. It is recommended here that a self-help car wash could be considered. The following are the benefits of car washes: 1. The investment costs are low: small space, simple equipment and relatively low investment costs compared to traditional car washes. 2. A broad client base: car washes can serve clients with different needs, ranging from ordinary car owners to consumers who like diy. 3. Savings in labour costs: car washes do not require the employment of professional car washers, which can save significant labour costs. 4. Energy conservation for the environment: car washes use less water and can be recycled with less environmental impact. 5. Personalized services: car washes can provide different services according to the needs of clients, such as car wash tools, cleaning agents, vehicle protection services, etc. 6. Flexible business practices...