Features: 1)Corrosion-resistant, UV-resistant, anti-deformation, stabilized, stainless steel pact, durable, easy and fast to install 2) High strength composite wet pads can endure water rush and is anti-ageing. 3) Automatic controlled open water distribution system, which enables smooth water flow 4) Humanizing computer control system, auto protection function makes parts safe and durable. 5) Inverter design for more energy-saving.