Bear "Customer first, High quality first" in mind, we perform closely with our consumers and provide them with efficient and experienced services for wheel type heat recovery core, HEPA Filter , climate control , Keywords B ,Fresh air ventilation . Through more than 8 years of business, we have accumulated rich experience and advanced technologies in the production of our products. The product will supply to all over the world, such as Europe, America, Australia,Cologne , Turkey ,Sydney , Iran .Our advanced equipment, excellent quality management, research and development ability make our price down. The price we offering may not be the lowest, but we guarantee it is absolutely competitive! Welcome to contact us immediately for future business relationship and mutual success!