To be able to give you benefit and enlarge our business, we also have inspectors in QC Team and assure you our greatest service and products for heat recovery core of AHU, climate , residential HVAC system , hospital air systems ,air conditioners . Welcome all nice buyers communicate details of solutions and ideas with us!! The product will supply to all over the world, such as Europe, America, Australia,Istanbul , Ecuador ,US , Pakistan .We have been making our products for more than 20 years . Mainly do wholesale , so we have the most competitive price , but highest quality. For the past years , we got very good feedbacks , not only because we provide good products , but also because of our good after-sale service . We are here waiting for you for your inquiry.