Qhb, Type Submersible, Reflux Pump (1.5kw) manufacturer / supplier in China, offering Qhb Reflux Pump, New Xqdtm Submersible Mixer with Planetary Gearbox More Torque and Energy Saving, Low Speed Submersible Agitator with Planetary Gearbox Nitrification and Denitrification and so on.