Being supported by an advanced and professional IT team, we could offer technical support on pre-sales & after-sales service for passitive house ventilation system, Air cleaner , Enthalpy Heat Exchanger , Plate fin Heat Exchanger ,low temperature heat exchanger . Your inquiry might be extremely welcomed plus a win-win prosperous development are what we've been expecting. The product will supply to all over the world, such as Europe, America, Australia,Kuwait , Swansea ,Puerto Rico , Libya .All our staffs believe that: Quality builds today and service creates future. We know that good quality and the best service are the only way for us to achieve our customers and to achieve ourselves too. We welcome customers all over the word to contact us for future business relationships. Our products are the best. Once Selected, Perfect Forever!