（1）Characteristics of a Negative Pressure Fan:
The entire unit is designed using CAD/CAM technology and has several features, including low investment cost, large air volume, low noise, low energy consumption, smooth operation, long lifespan, and high efficiency. The shutters open and close automatically to achieve dustproof and waterproof effects, and the design is aesthetically pleasing. The fan can be used for both blowing and exhausting air, making it the best choice for cooling and ventilation in modern workshops. Environmentally friendly and energy-saving negative pressure fans are expected to become the mainstream in the ventilation and cooling equipment market.
(2) Functions of the Negative Pressure Fan:
For Exhaust and Ventilation: Installed outside workshop windows, typically on the downwind side, to extract air and remove odorous gases. This is commonly used in chemical plants and similar environments.
In Conjunction with Evaporative Cooling Pads: Used for cooling workshops during hot summer days. Regardless of the heat inside the workshop, the evaporative cooling pad and negative pressure fan system can reduce the temperature to around 30°C and maintain a certain level of humidity.
（3）Applications of the Negative Pressure Fan:
A.Suitable for workshops with high temperatures or unpleasant odors, such as heat treatment plants, foundries, plastic factories, aluminum extrusion plants, shoe factories, leather factories, electroplating factories, dyeing factories, and various chemical plants.
B.Suitable for labor-intensive enterprises, such as garment factories, various assembly workshops, and internet cafes.
C.Ideal for ventilation and cooling in horticultural greenhouses and livestock farms.
D.Particularly suited for places that require cooling along with a certain level of humidity, such as cotton mills, wool mills, flax mills, weaving mills, chemical fiber factories, warp knitting factories, texturing mills, knitting mills, silk mills, and sock factories.
E. Applicable in warehousing and logistics sectors.
（4）Used as an Exhaust Fan:
Common exhaust fans (commonly known as winnowing fans) have relatively poor performance and can only provide airflow to a small area. In contrast, negative pressure fans are much more effective, whether placed on the ground or suspended in the air. Typically, using four negative pressure fans in a 1,000 square meter workshop creates airflow throughout the entire space.
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