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Frame with Plastic Handle 1. Frame: Hot Galvanized sheet with zinc thickness of 275g/㎡, high anti-corrosion performance . 2. Plastic Handle, easy to carry , Convenient to load. Advantage: We have the advanced Complete CNC machine and Laser Cutting machine. Auto punching and bending, the accuracy of the hole is 100%, easy to assemble.es here.Fan blades 1. Material : 430 stainless steel, thickness 1.2mm 2. Diameter: 1270mm Advantage: Large air flow, no deformation, no fracture, no dust, attractive and durable. Note: Blade material also have galvanized sheet, aluminum alloy for option.Belt Pulley 1.Material: High strength aluminum-magnesium alloy by die-casting. 2. Blast-sanding treatment, eliminate internal stress to improve its own rigidity and stability. Advantage: Light weight, Low vibration ,attractive appearance.Belt Brand:Mitsuboshi belt (Japanese) Type: A type Advantage: Famous brand, Long service life, maintenance free.Bearing Imported double-row bearing with special waterproof design. Advantage: High strength, low noise, free maintenance and long service life.Motor 1.Isulation class:F grade 2. Motor Protection Grade: IP55 3. Brand:Chinese famous motor , siemens motor . Advantage: Motor voltage and frequency can be customized. Chinese famous motor OEM by special design for fan, the first put in the phase lack protection device which would power off when shortage of electricity.