Being supported by an highly developed and skilled IT group, we could offer you technical support on pre-sales & after-sales support for Fresh Air System, air to air heat recovery core , negative pressure room , Basement Ventilation Central ,Commercial ventilation solution . As a leading manufacture and exporter, we appreciate a great status inside the international markets, especially in America and Europe, because of our top high-quality and sensible charges. The product will supply to all over the world, such as Europe, America, Australia,Borussia Dortmund , Algeria ,Iraq , Bangladesh .We are sincerely looking forward to cooperate with customers all over the world. We believe we can satisfy you with our high-quality products and perfect service . We also warmly welcome customers to visit our company and purchase our products.