That is not about their law at all. Science is about honest proof and repeatability of that proof by anybody. So, if it is impossible to obtain unexpired vaccine vial from regular batch honestly, there is an artificial problem to prevent science to work as expected. And this is a proof too.

So the question is - is there any country in the world where random unopened and unexpired vial from regular vaccine batch could be obtained in the way accepted by scientists. If not - this is a 100% scientific proof that there is an intentional vaxxers trick to prevent any scientifically accepted analisys of that vaccines. If such country exists, it is a way to explore vaccines. If no scientist wish to use that way, it is a scientific proof too. A proof that this is not about science at all, regardless of what all that "scientists" in biochemistry, medicine, virology, etc. could tell you.