Aim the wheel of the password box at the place with strong light, look in from the gap of each wheel, and slowly turn the wheel, you can see that there are two depressions on the wheel, and the big depression plus 5 is the password of this wheel. If it still won't open, you can slowly open the lock with a screwdriver and reinstall it. If the above methods can't solve the problem, it is recommended to seek professional unlocking company to help open it.

1. Find a place with good light and look at the iron plate under the password thumbwheel. If you look carefully, you will find a small gap. Put all three gaps on the left, and then subtract three from each number on the left, which is the password. But different brands of luggage keys are different.

2. Aim the wheels of the password box at the place with strong light, look in from the gap of each wheel, and slowly turn the wheel, and you can see that there are two depressions on the wheel. The big depression plus 5 is the password of this wheel. For example, if the depressions of all three wheels are above 240, then its password is 795(2+5=7, 4+5=9, 0+5=5).

Put the password box in a place with strong light, dial the number and observe carefully. There will be a gap in one number in each group, stay in that position, and then find dozens of positions in the other two groups.

4. Use a screwdriver and other tools to slowly open the part of the lock head, and then reinstall it, and the combination lock can be restored to use. This method is only applicable to the case that some password boxes forget the password.

5. Ask a professional unlocking company to help open it.