1. Fan is made of high strength injection molded environmental plastic, double insulation.
2. Fan blade is designed according to hydromechanical principle to reach the optimal airflow and air pressure, high efficiency working, low energy consumption and low noise.
3. The cowl is made of thicken stainless steel, ultraviolet-proof and water-proof.
4. Easy installation and maintenance, sealing-up cable entry point.

1. Casing material: Made of high strength metal, spray painting and good anti-rust property.
2. Motor: high quality ball bearing motor, low power consumption and long working life.
3. Impeller: forward multi-impeller.
4. Non-return valve: come with valve inside the outlet to prevent flow backward.

1. The fan casings are manufactured from heavy galvanised sheet steel, low sound level.
2. All models incorporate DC variable frequency motor (permanent magnet synchronous motor) for lower energy consumption, with forward curved centrifugal impeller, comply with the efficiency requirements of the ErP Directive.
3. Free speed control: 1~10V voltage speed control and PWM signal speed control.
4. Stable performance: overcurrent protection, overvoltage protection, over temperature protection, overload protection and  shockproof.
5. Designed for excellent airflow: golden 45 degree runner design with Archimedes spiral centrifugal force.

1. High efficiency centrifugal motor with low power consumption and long working life.
2. Big air pressure and airflow.
3. Fan body was made of full metal material, with spray treatment, it's polish and anti-corrosion.
4. Portable handle, convenient and portable, with power control switch.
5. High quality rubber fixed mat, anti skid performance and durable.