ดักจับฝุ่น สารก่อภูมิแพ้ และแบคทีเรีย Adjustability: We Only picked air purifiers with a minimum of three adjustable speed levels. Air purifiers could be loud at their best speed — getting reduce, quieter velocity solutions, especially in bedrooms, is crucial, according to personalized experience. Simply because this item isn't stocked in our warehouse, Successfully Submitted (Awaiting Approval)