It can be our duty to satisfy your preferences and successfully serve you. Your pleasure is our best reward. We have been looking forward to the go to for joint expansion for high efficiency heat recovery ventilation system, HVAC , Classroom Ventilation , Ventilation system with heat recuperative ,Recuperator . Hope we are able to produce a far more superb long term with you by our efforts from the foreseeable future. The product will supply to all over the world, such as Europe, America, Australia,Kyrgyzstan , Oman ,Las Vegas , Puerto Rico .Our monthly output is more than 5000pcs. We have set up a strict quality control system. Please feel free to contact us for further information. We hope that we can establish long-term business relationships with you and carry out business on a mutually beneficial basis. We are and will be always trying our best to serve you.