We normally follow the basic principle "Quality Initial, Prestige Supreme". We've been fully committed to offering our consumers with competitively priced good quality merchandise, prompt delivery and professional support for residential suspended heat energy recovery ventilation system, air conditioning syestem , China Heat Exchanger , Air cleaner ,residential HVAC system . You would not have any communication problem with us. We sincerely welcome customers all over the world to contact us for business cooperation. The product will supply to all over the world, such as Europe, America, Australia,Nairobi , Dubai ,Ukraine , New York .We set a strict quality control system. We have return and exchange policy, and you can exchange within 7 days after receive the wigs if it is in new station and we service repairing free for our products. Please feel free to contact us for further information if you have any questions. We are glad to work for every client.