Our enterprise since its inception, usually regards product top quality as business life, repeatedly enhance manufacturing technology, make improvements to product excellent and continuously strengthen enterprise total high quality administration, in strict accordance with all the national standard ISO 9001:2000 for heat recovery ventilator, negative pressure and positive pressure , parts of HVAC system , wheel type heat recovery core ,ERV . We have now ISO 9001 Certification and qualified this item .in excess of 16 years experiences in manufacturing and designing, so our items featured with best quality and competitive selling price. Welcome cooperation with us! The product will supply to all over the world, such as Europe, America, Australia,Sierra Leone , Denmark ,Austria , Paraguay .Welcome to visit our company and factory, there are various products displayed in our showroom that will meet your expectation, meanwhile, if you are convenient to visit our website, our sales staff will try their efforts to provide you the best service