1. Why does the exterior of the letter box get rusty?
This is because the letter box is stained with acidic or alkaline solvents after installation or during use, or it is exposed to acid or alkaline environment for a long time to cause rust.
2. What should I do if the door lock tongue is loose?
Please use a screwdriver to tighten the screw on the lock tongue to get a stainless steel letter box
3. What should I do if the lock is broken?
Use a hand drill with a diameter of 4.2mm or 5mm to gradually drill along the lock core until the lock tongue is punched out at the bottom of the lock, and you can replace the new lock.
4. How to deal with scratches on the door panel?
Use a soft cloth with a small amount of soft wax to gently scrub the part.
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