As air pollution becomes an increasingly urgent challenge in urban and industrial areas, developing domestic capabilities in environmental monitoring technology holds significant scientific and practical importance. In response to this need, Dr. Nguyen Van Thien and his research team at Hanoi University of Industry undertook a ministerial-level project assigned by the Ministry of Industry and Trade: “Research and design of a large-scale AQI monitoring system based on LoRa/IoT technology,” implemented from April 2021 to December 2022, with the goal of developing a commercially viable solution.