Two stage bipolar purification, 1.0 thickness integrated module Meet stringent low altitude emission requirements Meet the emission requirements of new landmarks such as Shanghai, Beijing and Chongqing Up to 98% fume purification efficiency Passed ASHRAE 52.2-2017 performance test (merv15) Passed ASHRAE 52.1-1992 effectiveness test (95%) Module assembly and convenient installation Pass IP66 protection level test