1. Apply to ponds,rocky, bourn, aqurium tanks. 2. Novel design and generous, use the variable frequency technology;small power,large flow,high head, super silence and amphibious. 3. Use ceramic shaft, wear resistance, no rust, long service life, no copper element. 4. Realize free tool demolition, easy to clean. 5. The outlet realize multistage, suitable for a varirty of pipe diameter connection.