How to deal with the sinking of the security door?

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There are generally three situations in which the security door sinks, and the owner can treat it differently according to different situations: the first one: if the screw on the door hinge is loose, lock the screw when lifting the door. In general, it is best to loosen all the screws of the door first, then lift the door to a suitable height, and then lock all the screws. The second type: If the door hinge itself is of poor quality and thin material, and the hinge is deformed under the gravity of the door, then replace it with a hinge with better quality and thicker material. The third type: if the door frame itself is deformed, it will be more troublesome to maintain. You can call a property manager or other professionals to repair it.

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