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铝制屋顶排烟风机价格 Price of smoke exhaust fans for aluminium roofs
Aluminum roof fan is a kind of all-aluminium centrifugal roof exhaust fan with environmental protection and energy saving, which is jointly developed by European and American advanced technology research institutes. The product has smooth and beautiful shape, exquisite technology and meets the requirements of high-grade buildings for the … 2019-10-15 |
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No power for ventilation and ventilation of unpowered fan
In chicken house, duck house, pig house and so on, ventilators should be used to discharge turbidity, ventilate and cool down. On the 16th, the reporter saw in the new energy exhibition area of the Agricultural Expo that a powerless fan can achieve ventilation and ventilation without electricity, saving farmers a sum of electricity. 2019-10-15 |
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