... ,noise 2.good ventilation 3.Large airput Stainless steel poultry/industrial fan 1)The shell is made of galvanized sheet,which is ... material,which is anticorrosion,good toughness,nice appearance.3) The fan blade of this product is made of hightech composite polymer ... (mm)Thickness(mm)1000#100060013503250070≤56750380110011004001250#12504391400 stainless steel poultry/industrial fan