With advanced technologies and facilities, strict quality control, reasonable price, superior service and close co-operation with customers, we are devoted to providing the best value for our customers for negative pressure and positive pressure, Holtop Industrial Air Conditioning System Solutions , HEPA Filter , ventilation at hospital ,HVAC air handling units . Currently, we are looking forward to even greater cooperation with overseas customers based on mutual benefits. Please feel free to contact us for more details. The product will supply to all over the world, such as Europe, America, Australia,Kuala Lumpur , Jordan ,Maldives , Puerto Rico .All these products are manufactured in our factory located in China. So we can guarantee our quality seriously and availably. Within these four years we sell not only our products but also our service to clients throughout the world.