The double bed with gas spring (gas support) can't be pressed down.

Since the leak-proof plug is not opened, the solution is as follows:

Open your mouth and put the leak-proof plug in your mouth with a toothpick or something.

Then give anyone a compressed bed.

Lockable bed gas spring is a kind of gas spring that can be locked at any position in the stroke. The end of the piston rod of the lockable gas spring is provided with an ejector pin to push the ejector pin. After the internal valve is opened, the lockable gas spring can freely extend like a compressed gas spring. When it reaches the required position, release the ejector pin, close the internal valve and lock the piston rod. After locking, the lockable gas spring can bear a large load through its locking force. If the load exceeds the locking force, the locking function will fail.