ขึ้นอยู่กับประเภทของไส้กรองและการใช้งาน โดยปกติ Matching your air purifier to the area square footage and sort is important for it to operate at its best. A standard rule of thumb is to settle on an air purifier which has a CADR which is at the very least two-thirds the size of the home. https://mannatureairpurifier.com/