Ventilating fans for commercial and industrial use; Radial air fans, namely, centrifugal fans for commercial and industrial use; Suction ventilators, namely, ventilators for air suction for commercial and industrial use; Compressed air ventilators for commercial and industrial use; Ventilating fans for industrial use; Axial fans, namely, fans for sucking of fumes, dusty and damp air for commercial and industrial use; Ventilating exhaust fans; electric fans for fume extractors; Ventilators for...