How is the quality of Qitian air pump?

Not bad. Long sustainable use time. The water flow is stable. Inflation is fast. Products are made of high-quality materials, no odor, non-toxic and harmless. Air pump is also called air pump and air pump. Air pump works by the operation of motor. When pumping air, the atmospheric pressure pushes the valve of the communication device open, and the gas enters the air pump. When the tire is inflated, the valve is closed by the air pressure in the air pump, and the gas enters the tire. It can be regarded as using the principle of atmospheric pressure to inflate cars, balls and rubber boats.