Focusing on environmental sanitation cleaning operations, including cleaning and maintenance, garden care, air purification and humidity regulation, etc., the truck is applicable to the scenariosIt seems that there is no text provided for translation. Please provide the text you would like me to translate.

1. Urban main and secondary roads:

2. Industrial parks，airports，squares；

3. Curbs, isolation posts;

4. Sidewalks;

5. Road signs, billboards;

6. Vehicles;

7. Parks;

8. Fire emergencies.