วิธีเลือกซื้อเครื่องฟอกอากาศในห้องนอน เลือกอย่างไรให้คุ้มค่า Matching Your air purifier in your place square footage and type is important for it to operate at its best. A standard rule of thumb is to select an air purifier that has a CADR that may be at the very least two-thirds the size with the place. waiting for link from Social Network Posts (3)