As Observed inside our guidebook to top rated-rated peaceful air purifiers, we advise cross-examining claimed decibel ranges with purchaser groups like Tranquil Mark, a United kingdom-primarily based impartial world wide certification program that identifies the quietest solutions. มีขนาดกะทัดรัด พกพาไปใช้งานได้อย่างสะดวกในทุกที่ The Blue Pure 211+ aced our tests, and because it may Successfully Submitted (Awaiting Approval)