FFU Air Purifier manufactured by Dongguan Amber Purification Engineering is a motorized air filtering equipment to supply purified air. FFU air purifiers remove dust, odor, formaldehyde, keep the air in the room clean and protect the health of people. Under the strong negative pressure generated by the centrifuge, the indoor air is drawn into the air inlet, and the primary filter catches hair and some visible pollutants. High efficiency odor filters can remove substances such as formaldehyde, toluene, and benzene. PM10, PM2.5, and other fine particles are removed from the air by a powerful HEPA filter. Replace the HEPA filter every six to twelve months. Replace the activated carbon filter every six to twelve months. Every two weeks, the prefilter should be washed.