No matter new customer or old customer, We believe in long term and trusted relationship for Basement Ventilation Central, AIR TO AIR HEAT EXCHANER , HEAT EXCHANGERS FACTORY , heat recuperative ventilation system ,negative pressure airflow . We warmly welcome all interested customers to contact us for more information. The product will supply to all over the world, such as Europe, America, Australia,South Korea , Nicaragua ,Muscat , Iran .Our company has built stable business relationships with many well-known domestic companies as well as oversea customers. With the goal of providing high quality products to customers at low cots, we've been committed to improving its capacities in research, development, manufacturing and management. We have honored to receive recognition from our customers. Till now we have now passed ISO9001 in 2005 and ISO/TS16949 in 2008. Enterprises of "quality of survival, the credibility of development" for the purpose, sincerely welcome domestic and foreign businessmen to visit to discuss cooperation.