95% oil fume purification efficiency (CMA) Comply with international emission HJ / t-2001 Comply with Shanghai landmark (DB31 / 844-2014) Comply with Beijing landmarks (DB11 / 1488-2018) Passed ASHRAE 52.2-2017 performance test (merv15) Passed ASHRAE 52.1-1992 effectiveness test (95%) Passed European CE certification Ba remote control system can be connected Configurable models with wind speed less than 2.5m/s