The companies seem to be taking turns releasing the batches. Ones without toxins to get a baseline then another toxic dose. They seem to be experimenting with different formulas and dosages on the public.
Here is an example from the UK (because it was easy to find a graphic, this example is for vaccine produced in-country):
Link: https://www.nibsc.org/about_us/latest_news/batch_testing.aspx
Nearly every country in the world batch checks vaccines produced in other countries again, even though they have been checked by the manufacturer and relevant government agency of the country of issue. Australia, for example, even though it is a Commonwealth country, batch checks vaccines manufactured in the UK which have already been through the above process.
Now, if you want to believe thousands of lab workers all over the world are all in on this huge evil conspiracy (and keeping mum about it), be my guest.