Features: -It uses a new and improved high-quality rotor, copper wire, fan, which is resistant to high temperatures, has a long life, sufficient power, and can work for a long time without burning out. -The body is electroplated, rust-proof, corrosion-resistant and beautiful in appearance. -The design has perfect electrical protection device, sealed and waterproof. The coaxial machine adopts floating loop structure to improve mechanical efficiency and volumetric efficiency. -Low noise, no noise pollution. Simple structure, few parts, easy to maintain and repair. Stable performance, large flow, can save electricity costs. .