Ventilation duct system: Duct-type air purification and disinfection device, suitable for various centralized ventilation scenarios. The body is made of stainless steel, with a sturdy and durable structure, excellent corrosion resistance, can effectively withstand the complex environment inside the ducts, ensuring long-term stable operation. The device is equipped with high-efficiency filtration and disinfection modules, through multi-layer filter mesh combinations (specific filter mesh configurations can be customized according to needs), can accurately intercept dust and particulate matter, and with advanced disinfection technologies (such as ultraviolet disinfection, plasma disinfection, etc., can be selected as needed), quickly kill bacteria, viruses, and other microorganisms, deeply purify the air. Size specifications: Length 350m× Width 150mm× Height 80mm