2. Four-classification collection points: at least 1-2 four-classification collection points are set in each community, and each four-classification collection point is set with 1 hazardous trash can (red), recyclable trash can (blue), perishable trash can (green) and other trash cans (gray).

3. Domestic waste sorting service station: every 1500 households (about 50 square meters) is provided with 1 domestic waste sorting service station (dry waste transfer station) for education and publicity, sorting guidance and dry waste transfer.

4. Wet garbage transfer station: each community has 1 wet garbage transfer station (sanitation connection station) for wet garbage transfer, and facilities such as washing, drainage and deodorization should be installed inside. Carry out daily collection, daily transportation and daily cleaning to ensure cleanliness.

5. Bulk garbage and building decoration garbage transfer stations: each community has at least 1 bulk garbage and building decoration garbage transfer stations for bulk garbage and building decoration garbage transfer.

The construction of "three stations" (domestic waste sorting service station and wet waste transfer station) and "large waste and building decoration waste transfer station" in residential quarters is an important infrastructure for waste sorting. Please support the construction of "three stations" and do a good job in garbage sorting.