Some waste water treatment system is in the downtown or outside of city, but it still need low noise level for environmental protecting. Blower products produced in Huadong Blower makes low noise level, fitting for most waste water treatment systems' need.
If you have any need, pls contact me directly.
Best wishes
Felicia Lin
Email: felicia@chinarootsblower.com
Tel: 0086-18315459878