What should I do if I can't open the glass lunch box?

If the ceiling of the glass preservation box cannot be opened, you can try the following methods:

Put in hot water: Put the lid part into the hot water for a few minutes, and then try to open it. Hot water can loosen the lid and easy to open.

Use rubber gloves: Put on rubber gloves, hold the lid and rotate with force, which can increase friction and make it easier to open.

Cut with a knife: Use a knife to cut lightly along the edge of the lid. Be careful not to force the box.

Use suction cups: Paste the suction cup in the center of the lid, and then pull it up hard, so that you can break the suction and open it easily.

It should be noted that do not use excessive force or scratching the surface of the box to avoid destroying the box.