Capacitors issue

Hello.
Bought from Mouser 8 pcs. KEMET 470uF/450v. When opened the pack found two caps are not steady fitted in and have severe rattling inside the shell. I consider this sort of mechanical problem unacceptable and intend to return. But just as information , what can be the cause of this type of fault for a new caps please? The shell have not signs of mechanical shocks to suppose someone dropped to the floor , or some. These are first capacitors I saw rattling and was happened to be fresh new ones. Why ? Thanks.
 

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No Quality control from the assembly line
The end of the can looks like it was wasn’t cramped over the bottom plate
But for sure, they look fake. The black can says one thing and the blue cap says other numbers
Send them back, call first and give them hell about this