1 Don't sign for it if you don't receive it. Please check whether the package is intact, damaged, deformed and unpacked.

Open the package in front of the salesman to see if the interior is in good condition! A salesman testified! At the same time, you are also testifying for the salesman!

Confirm, sign, and sign in block letters!

If, as you said, it can't be returned after unpacking, then this can't be helped! Even if your box is transparent, it is impossible to check it completely!