Specifications

1). No maintenance or operating costs,
2). Water and dust proof,
3). Improves air quality,
4). Improves productivity.

No power roof ventilation fan / wind power roof ventilation

1. Product's advantage 
1). No maintenance or operating costs, 
2). Water and dust proof, 
3). Improves air quality, 
4). Improves productivity. 
5). The structure of the high quality, 
6). The precision of the running device, 
7). Green environmental protection ventilation equipment 
8). Applicability widely. All kinds of industrial factory building contour plate light steel structure roofing, concrete roof can also be installed. And there's no need to support, installation is convenien

2. products pictures: