Our Authorities agree that filtration is vital when choosing an air purifier, and emphasize two crucial things in obtaining efficient filtration: HEPA filters and an proper CADR. ตัวเครื่องอาจค่อนข้างใหญ่ไปสำหรับผู้ใช้บางท่าน CADR (clean up air shipping ranking) is definitely an indicator of how properly an air purifier will apparent a specified space of Successfully Submitted (Awaiting Approval)