"Based on domestic market and expand overseas business" is our development strategy for fresh air units, ventilation hygiene , heat recovery ventilation , indoor air quality control system ,heat recovery core of AHU . sincerity and strength ,always keep approved good quanlity ,welcome to our factoty for visit and instruction and business. The product will supply to all over the world, such as Europe, America, Australia,Senegal , Iran ,Finland , Anguilla .We have gained a lot of recognition among customers spread all across the world. They trust us and always give repetitive orders. Furthermore, mentioned below are some of the major factors that have played significant role in our tremendous growth in this domain.