During the past few years, our business absorbed and digested state-of-the-art technologies the two at home and abroad. Meanwhile, our firm staffs a group of experts devoted to your development of wheel type heat recovery core, Air To Air Heat Exchanger , passitive house ventilation system , Fresh air ventilation ,HVAC . We are one of the largest 100% manufacturers in China. Many large trading companies import products from us, so we can give you the best price with the same quality if you are interested in us. The product will supply to all over the world, such as Europe, America, Australia,Morocco , Sheffield ,Costa Rica , Chile .Our company will continue to adhere to the " superior quality, reputable, the user first " principle wholeheartedly. We warmly welcome friends from all walks of life to visit and give guidance, work together and create a brilliant future!