Summer 26 ℃ legislation, "Exhaust Fan" Store How energy efficiency? This reporter recently visited some electrical specialist. When talking about how to prevent the outflow of air conditioner, the experts recommend: air conditioning with air curtain with use expected to solve these problems. According to them, due to the wind-screen machines with isolation function, so after installation, forming a curtain of air, a decrease of approximately 80% of air loss for a crowded shop is the best choice. In addition, the air curtain also with pest control, dust, odor and other compartments features that make customers such as restaurants, shops and entertainment venues frequented places no longer need to keep the door switch, it can be easier to maintain better fruit counter, fast food operations room, meat hygiene and safety point of sale.