This black bean sauce lists a different "use by" dates depending on whether you read the French or Dutch section, with the French section reading 4 weeks and the Dutch version only 2 weeks. Could there be a culinary reason for this wildly different "use within X weeks after opening" shelf life? Or is this merely a printing error?
As promised in a comment, I have an update that I'm posting as an answer for formatting and length reasons.
Someone in a Discord I frequent had an unrelated meeting with the Belgian FAVV, the Federal Agency for Food Safety today, and he mentioned the product. I'm sharing a Dutch screencap below of what he shared about the meeting:
The initial expectation is that the label was also made in China and the error occurred there, but it has generated a lot of laughter in people from the FAVV, the Department of Health, Sciensano (Belgian institution researching various health and safety situations) and a number of people from the corporate world ;-).
The FAVV has both a phone number and an email address where this can be reported
And then it mentions the locations where this can be reported.