1.The gear is using chromium-manganese-titanium alloy steel immersed in carbon and nitrogen, which can prolong the life span 2.Using a patented technique, the non-welded impeller can run stably, and it is easy to carry around 3.Built-in protector will jump off automatically so as not to burn down the engine if the lack phase of tri-phase source or engine overheating occurs. 4. It with high speed to increase oxygen, also with high efficiency. 5. Can quickly and efficiently solve hypoxia to avoid death phenomenon, 6.is scientific for fish, increase the breeding density, improve the fish yield per unit of area, 7. it is the necessary breeding farming machines