As Mentioned inside our information to major-rated silent air purifiers, we advocate cross-checking claimed decibel degrees with shopper groups like Silent Mark, a United kingdom-primarily based independent world-wide certification software that identifies the quietest merchandise. จัดส่งฟรี! เมื่อสั่งซื้อเครื่องกรองอากาศทุกรุ่น We tested the Coway Airmega Icon purifier in April 2020.... Successfully Submitted (Awaiting Approval)