Our products are greatly recognized and trustworthy by users and will fulfill continually shifting economic and social requires for Ducted Heat Recovery Ventilation System, heat recovery core , HRU , hospital air handling systems ,indoor air purification . Our Lab now is "National Lab of diesel engine turbo technology " , and we own a professional R&D team and complete testing facility. The product will supply to all over the world, such as Europe, America, Australia,Israel , Lithuania ,Toronto , Kyrgyzstan .The design, processing, purchasing, inspection, storage, assembling process are all in scientific and effective documentary process , increasing usage level and reliability of our brand deeply, which makes us become superior supplier of the four major product categories shell castings domestically and obtained the customer's trust well.