Top margin PP fan, in addition to the smell of plastic fan Product Description: 1 used in industrial plants contain corrosive acid gas pump drainage 2 support in the chemical laboratory equipment pumping exhaust gases for use in different types of biological laboratories ventilation 3 used in coastal areas prone to damp corrosive decomposition top margin PP pumping exhaust fan, in addition to the smell of plastic fan Description: The product is compact, heating film is welded flat performance curve, efficient district wide, running smooth, corrosion resistance, light weight, cheap, and more for laboratory fan. FRP fans far beyond the top margin of about 50% of the domestic general fan of efficiency, every day you save electricity costs one-third to 100HP fan 24 hours running calculations, you can save $ 500,000 per year of electricity!