"Sincerity, Innovation, Rigorousness, and Efficiency" could be the persistent conception of our organization for your long-term to establish alongside one another with shoppers for mutual reciprocity and mutual benefit for heat recovery core of AHU, AIR TO AIR HEAT EXCHANER , Heat Exchange System , 600cmh ERVs ,fresh air purification . With a wide range, good quality, reasonable prices and good service, we will be your best business partner. We welcome new and old customers from all walks of life to contact us for future business relationships and achieving mutual success! The product will supply to all over the world, such as Europe, America, Australia,Cologne , Lithuania ,Rio de Janeiro , Algeria .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.