Our enterprise since its inception, constantly regards product good quality as organization life, constantly improve production technology, strengthen merchandise high quality and continuously strengthen enterprise total good quality administration, in strict accordance with all the national standard ISO 9001:2000 for AHU core, ventilation system for hospital , Fresh air recuperator , Industrial Projects ,Ventilation Unit . Welcome to post your sample and color ring to let us produce according to your specification.Welcome your inquiry! Looking forward to building long-term cooperation with you! The product will supply to all over the world, such as Europe, America, Australia,Austria , Spain ,Berlin , Rwanda .With the first-class solutions, excellent service, fast delivery and the best price, we've won highly praise foreign customers'. Our products have been exported to Africa, the Middle East, Southeast Asia and other regions.