Stainless steel negative pressure fans are industrial-grade ventilation equipment manufactured from high-quality 304 stainless steel, with core functions of air exchange and heat extraction. Featuring excellent corrosion resistance, easy cleaning and long service life, they are widely used in various high‑environment‑requirement places and are an ideal solution to stuffiness, odors and poor ventilation in workshops, factories, warehouses and other spaces. This product is made of 304 stainless steel, which provides outstanding corrosion resistance, rust resistance and high temperature resistance. It can effectively withstand harsh environments such as humidity, acid and alkaline gases, and dust. Compared with ordinary iron fans, it has a significantly longer service life, requires less frequent maintenance and reduces long‑term operating costs. It is especially suitable for applications requiring corrosion protection, including food processing, chemical engineering, electroplating and seafood processing. In terms of core functions, the fan operates on the principle of negative pressure ventilation. When running, it quickly exhausts hot air, odors, dust and harmful gases from the space while drawing in fresh air, realizing rapid indoor‑outdoor air circulation, quickly lowering indoor temperature and improving workplace comfort. It protects the health of workers and prevents high temperatures from damaging equipment and products, achieving the dual effects of ventilation, cooling and air purification. The product comes in a wide range of models with different specifications, air volumes and installation methods. Customization is available according to actual application requirements, such as space size, ventilation demand and installation location. Suitable solutions are provided for both small workshops and large factories, supporting wall-mounted, roof-mounted and floor-standing installation to flexibly meet various ventilation needs. In addition, the fan features a rational overall structure, stable operation, low noise, low energy consumption and high efficiency. It delivers efficient ventilation while reducing power consumption, balancing practicality and economy. The equipment is easy to operate and install, with low later maintenance costs. Routine inspection and simple maintenance can be performed without professional personnel, offering users a convenient and efficient ventilation solution.