1.Smooth operation and zero leakage 2.low noise 3.low failure rate and easy maintenance 4.Flow:1.5~3.0m3 ... support pump, smooth operation, except slight sound, basic noiseless motor.Low failure rate: simple reasonable structure, key part adopts the international first ... , easy to.More space-effective: exports to the left, right, can be in three directions upward, pipeline layout and installation, save ...