Being supported by an advanced and professional IT team, we could offer technical support on pre-sales & after-sales service for air to air wheel type heat exchanger, heat recuperative , hospital air handling units , Floor ERV ,Air Handling Unit System . If you are interested in any of our products or would like to discuss a custom order, please feel free to contact us. The product will supply to all over the world, such as Europe, America, Australia,Sao Paulo , Plymouth ,Nigeria , Czech republic .we are sincerely hope to establish one good long term business relationship with your esteemed company thought this opportunity, based on equal, mutual beneficial and win win business from now till the future.