[Sun] Deyang non-powered roof ventilators Haikou power roof ventilators without power roof ventilators advantages, strong corrosion resistance, for 10 years of quality to ensure the high quality of the body, can stand for a long time to get the wind and rain, can resist the erosion of indoor corrosive gases, excellent sealing low resistance bearings, the durable Yongbao lubrication, no maintenance. 2, ventilated fully enclosed bearings, lubrication-free. C45 steel as spindle has a strong resistance to corrosion. 3, the blade wavelike blade is according to the precise principles of fluid mechanics and design, to increase the exposure and the angle of the blades with the wind, the greater the rotational force can be obtained in the breeze, to avoid the respective direction of the wind was poured into air duct phenomenon, and the utilization of each direction of the wind to accelerate the rotational speed of the turbine head, which fully played rain, snow, and the exhaust. As a result of the wave shape, mechanical strength greatly enhanced ability to pressure similar products! No power roof ventilation device 1 is the use of the principle of air convection in the nature, any direction parallel to the air flow, accelerating and into a bottom-up perpendicular to the flow of air. 2 is the use of buildings and equipment itself chimney effect, in order to reach a ventilation of indoor and outdoor equipment. Liaocheng Sunshine Stainless Steel Co., Ltd. is currently the only company specializing in the production of roof ventilation equipment manufacturers. In recent years, under the joint efforts of the engineering and technical personnel, factory production of free electricity --- roof ventilation is currently one of the domestic specifications largest and most complete variety of manufacturers. 300, 360, 450 with residential buildings, the villa floor roof ventilation mouth, 500, 600, Model 680 is mainly used for exhaust ventilation plant workshop and large public places. All stainless steel body, cast aluminum support special double sealed bearings. World-class product sales over the face of the country, after-sales service. Windmill - wind pumps fuel, no electricity, manufacturing, and that is able to start. High tower fan blade diameter of 5-10 meters, all nine specifications can be designed according to the different needs of production. Colorful the weathervane widely used in the park, and the edge of the green belt, villas and corporate production environment, it can not only indicate the wind direction and speed levels can also add a dynamic and harmonious environment. The face of strong competition in the market, our factory always adhere to manufacture high quality products for the guidelines, adhere to honesty, excellent service up to a maximum customer satisfaction associates: King Star Manager Sales Tel 0635 -8322238 13906356805