The product is made in aluminum alloy, which is cutting, by laser to ensure highrecision mold line. The base is aluminum alloy for one-time stretch. Driven cavity cover adopts galvanized material, which can open with hands, and convenient to daily cleaning maintenance. Different ways of motor with different transmission need to select different motor bracket. The impeller adopts laser cutting technology and die stretch forming. A different work environment needs to adopt different impeller material. Carbon steel, stainless steel and aluminum alloy impeller are optional. The surface of the impeller adopts industrial spraying. Impeller balance test grades are in strict accordance with the G4.0 ISO1940, and meet its requirements. In this series, roof blower use aluminum alloy wheel.
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