The MAC Series Air Purification and Disinfection Unit is a multifunctional, low-noise air purification and disinfection device. It can perform both indoor air purification and plasma-based disinfection by removing harmful substances from the air—such as suspended particles, smoke particles, inhalable particulate matter, microorganisms, and organic gases—from the indoor environment; it can also employ negative pressure to extract indoor air, purify and disinfect it, and then discharge the treated air outdoors. This unit is widely applicable for air purification and disinfection in public venues, hospitals, schools, offices, laboratories, and other settings to improve air quality; it can also be deployed in negative-pressure isolation environments to extract indoor pollutants, purify and disinfect them, and subsequently discharge the air outdoors, thereby safeguarding people's health.