/129/111/29111871.jpg1, the difference between the air supply outlet and the air exhaust outlet is that the difference between the air supply outlet, the suction outlet and the air exhaust outlet is from the style: the former is a square diffuser, while the latter is a grille type. 2. From the point of use: the former mainly sucks the turbid air back, while the latter discharges the indoor turbid gas to the outside. 3. From the installation mode, the former is mainly installed on the wall in each room, while the latter is installed in an area not far from the computer room. For this kind of products, it is recommended to use a separate socket when using, and do not use a socket with other electrical appliances, otherwise it is very easy to cause short circuit, and at the same time, do not change the state at will when the equipment is running, otherwise it is very easy to cause the function of the body to be damaged.