เปรียบเทียบคุณสมบัติ เปรียบเทียบรุ่นสินค้า Adjustability: We Only picked air purifiers with at least three adjustable speed degrees. Air purifiers can be loud at their maximum speed — acquiring decrease, quieter pace options, especially in bedrooms, is important, based upon particular practical experience. We tested the Coway Airmega Icon purifier in April 2020. https://www.mannature.com