The ROS‑A FA4100 Large Duct‑mounted Plasma Fresh Air Unit adopts the ROS‑X™ TD‑L large tubular plasma generator (350*4) with a set of four large plasma tubes. It satisfies deodorization and disinfection demands for moderate‑to‑severe air pollution in large‑volume spaces.
The ROS‑A FA4100 Large Duct‑mounted Plasma Fresh Air Unit generates substantial ROS multi‑ion groups composed of reactive oxygen species and free radicals. It actively removes various odorous molecules in the air for fast odour elimination, while inhibiting bacteria, viruses and mould.

Shanghai Dst Sensor Co., Ltd. (DST Tech), established in 2012, is located in the Shibei High-tech Service Park—a national demonstration zone for independent innovation and a Shanghai big data industry base. Dedicated to becoming a global leader in ecological environment data services based on smart IoT, the company leverages sensing technology as its core and utilizes cutting-edge ICT—including IoT, cloud computing, big data, and AI—to build comprehensive, multi-layered environmental quality monitoring networks. Spanning environments from the outdoors and indoor living spaces to vehicle interiors, and covering the full spectrum from monitoring and purification to remediation, Diqin Tech enables environmental quality to be visualized, managed, controlled, and interactive, thereby fostering a synergy between smart technology and green living, and aligning health with business development.