Why do people think that air purifiers useless?
Many believe the first use of an air purifier consumer will have a question, that is, air purifiers really work? Air purifier is a method for filtering the air of harmful substances, so that the polluted air becomes clean and healthy appliances. Note that, since the object of an air cleaner is air and having an air flow. Thus, in the process of purifying the air, we must ensure that the air needs to be purified and the interaction can not occur...