We believe that long expression partnership is often a result of top of the range, value added service, prosperous encounter and personal contact for passitive house ventilation system, heat recovery core of AHU , ALUMINUM FOIL HEAT EXCHANGERS , HVAC air handling units ,Rooftop Air Conditioner . We will keep working hard and as we try our best to supply the best quality products, most competitive price and excellent service to every customer. Your satisfaction, our glory!!! The product will supply to all over the world, such as Europe, America, Australia,Jordan , Paraguay ,Moldova , Lesotho .We rely on high-quality materials, perfect design, excellent customer service and the competitive price to win the trust of many customers at home and abroad. 95%products are exported to overseas markets.