ค่าไฟฟ้า : เครื่องประหยัดพลังงานจะช่วยลดค่าใช้จ่ายได้ในระยะยาว Matching Your air purifier in your place sq. footage and kind is essential for it to operate at its best. A typical rule of thumb is to choose an air purifier with a CADR which is no less than two-thirds the dimensions on the place. Each and waiting for link from Social Network Posts (13)