No Power Roof Fan

Qingzhou Gorsvan Machinery Technology Co., Ltd. is a professional company engaged in the design and research of temperature controlling equipments. We have cooperated with famous universities for integrating production, learning and research. We devote ourselves to the scientific and technological development of cooling and heating equipments. Green Exhaust Fan Co., Ltd. is speciallized in cooling and heating equipments such as honey comb evaporative cooling pads , animal husbandry fans, exhaust fans, greenhouse fans, negative pressure fans, gardening fans, circulation fans, roof automatic ventilators, axial flow fans, hot blast stoves,electric heaters, oil gas heaters,biomass heaters etc. They are widely used in Greenhouse agriculture, Flowers gardening, Animal husbandry, Textile, Mining,Coal mining,Chemical industry,Shopping malls and supermarkets,Industrial,Commercial,Indoor &Outdoor,Smoke,Automotive, Warehouses,Farms,Barns, Steel Mill, Stagnant Air, Factories, Hospitals,Worksites,Minesites, Gym Use, Gymnasiums,Offices,Buildings etc. All products passed CE and ISO9001:2000 quality management systems which are widely used in world markets.