Foshan Beisuda Environmental Engineering Equipment Factory, stablished in 1979, is a professional manufacturer of factory cooling system products, such as exhaust fans, plastic frame fan, cooling pad, anion system, FRP frame fan, etc. Specifically, our bsd series exhaust fans have been widely applied in many areas where ventilation and cooling are needed, such as garment, toy, electronic hardware, shoes making, plastic factory halls, poultry house and greenhouse. [Details]