Maintenance skills

    First, the hardware accessories at the interface need to be checked regularly, including locks, hinges, sealing strips, positioning pins and wind brace. These parts are often rubbed and easily rusty and damaged. More inspection, timely replacement of damaged parts, regular addition of lubricating oil, can ensure the use of aluminum alloy doors more smooth. 

    Second, the sealing and glass sealing needs to be repaired and replaced regularly, otherwise the effect of wind protection and heat preservation will be reduced. 

    Third, the screws at the door frame and the wall connection need to be strengthened regularly to ensure that the door can be closed normally.