Place of Origin : Guangzhou,China

For decades, to fulfill heavy duties like backwash, people have to constantly endure a high noise over 70 dBA (@1m) from their oversized pool pump. According to scientific research, above 60 dBA is already the noisy range, long-term in the environment of more than 70 dBA, people would feel upset, distracted, and hearing nerve can suffer a certain extend of damage especially to children.