1. Connector resistance seam welding with high frequency to ensure that leakage is not easy to rust; 
 2. Imported 304BA stainless steel plate, no rust, no students moss, easy to clean; 
 3. Fully enclosed structure, effectively prevent debris, insects, has a good environmental performance; 
 4. Installation is simple, just connect the pipes can be placed on the roof used to automatically control the water level.