Interesting idea. I'm not sure that the salt in Vietnam is identified as being from Vietnam. Kind of like the olive oil that is in supermarkets labeled as being from Italy even though a huge portion of Italy's olive oil was imported in bulk from Spain and then bottled in Italy - thus being able to label it as a product of Italy even though it was manufactured in Spain. Does that make sense? I have a feeling that Vietnam exports in bulk to other countries where it is then packaged up and labeled.