1. The equipment is buried under the ground, which can be afforested, and the environment is beautiful.
2. Generally, the whole equipment does not need to be managed by special personnel.
3. It can reduce the occupied area. Parking lot can be built above the equipment, without building workshop and other facilities.
4. No impact on the surrounding environment, less sludge production and less noise than the standard of class II area.
5. Simple operation, new technology, good effect and long service life.
6. The equipment can be arranged according to the standard or according to the terrain.
