"Sincerity, Innovation, Rigorousness, and Efficiency" is the persistent conception of our company for the long-term to develop together with customers for mutual reciprocity and mutual benefit for heat recovery core, Heat Recovery , Slim Ventilation , Heat Exchange System ,liquid circulation recuperator . Our merchandise are widely recognized and dependable by users and can meet continuously building economic and social needs. The product will supply to all over the world, such as Europe, America, Australia,Cologne , Guinea ,Macedonia , Greek .Many goods fully conform to the most rigorous of international guidelines and with our first-rate delivery service you will have them delivered at any time and in any place. And because Kayo deals in the entire spectrum of protective equipment, our customers don't have to waste time shopping around.