... Order Accepted5. OEM service6. Application to Rolling Door, garage door, roller shutter door.7. Quality Control: In House ... ,100% Inspection For The Machined Parts sclerometer, Spectrum, X-Ray .8. ... Ratio: 1: 4 Material: cast iron Specification: Suitable for 1-1/4’’(adjustable) shaft, with 8.0 m ... :Inspection Casting Hand Chain Hoist(Light Duty) for Garage door