We emphasize progress and introduce new merchandise into the market each and every year for Ventilation System heat recovery core, Keywords B , Fresh air ventilation system , Mechanical ventilation system with heat recuperative ,heat recovery ventilation . Our company has been devoting that "customer first" and committed to helping customers expand their business, so that they become the Big Boss ! The product will supply to all over the world, such as Europe, America, Australia,Morocco , Mongolia ,Georgia , Seattle .During in 11 years, We've participated in more than 20 exhibitions, obtains the highest praise from each customer. Our company has been devoting that "customer first" and committed to helping customers expand their business, so that they become the Big Boss !