testing air purifier efficiency. small particulate matter digital dust sensor. Clean room with healthy breathable air good indoor environment. n
testing air purifier efficiency. small particulate matter digital dust sensor. Clean room with healthy breathable air good indoor environment. no particle dust detected.
Size: 5144px × 3430px
Photo credit: © CSueb / Alamy / Afripics
License: Royalty Free
Model Released: No
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