Avis has 7 locations throughout the area, more than any other company. Hertz has the second highest number of locations in Qingbaijiang at 3.
Hertz
Cleanliness
Comfort
Overall
Pick-up/drop-off
Value
Avis
The length of time you can book a rental for is subject to the inventory of the supplier. When renting a vehicle from Qingbaijiang it should be possible to rent a car for a whole month if needed.