We keep improving and perfecting our products and service. At the same time, we work actively to do research and development for fresh air units, air to air heat recovery core , ALUMINUM FOIL HEAT EXCHANGERS , MVHR ,Enthalpy wheel . For more information, please send email to us. We are looking forwards the opportunity to service you. The product will supply to all over the world, such as Europe, America, Australia,Afghanistan , Slovakia ,Tunisia , Peru .Only for accomplishing the good-quality product to meet customer's demand, all of our products have been strictly inspected before shipment. We always think about the question on the side of the customers, because you win, we win!