We've one of the most innovative manufacturing devices, experienced and qualified engineers and workers, recognized good quality handle systems and also a friendly experienced income team pre/after-sales support for House Ventilation, Passive Ventilation , Flat Plate Heat Exchanger , Erv Air Exchanger ,Hydronic Air Handler . Teamwork is encouraged at all levels with regular campaigns. Our research group experiments on various developments during the industry for improvement within the solutions. The product will supply to all over the world, such as Europe, America, Australia,Netherlands , Madagascar ,Sao Paulo , Paraguay .Our company regards "reasonable prices, high quality,efficient production time and good after-sales service" as our tenet. We hope to cooperate with more customers for mutual development and benefits in future. Welcome to contact us.