"26-30 Cooked Tail on Shrimp" refers to the size and preparation of shrimp, where the count of shrimp ranges from 26 to 30 per pound. The shrimp are already cooked and still have their tails attached. Since they are from Vietnam, it indicates that the shrimp were likely sourced from Vietnamese waters or farms.

Vietnam is one of the leading exporters of seafood, including shrimp, and it is known for both wild-caught and farm-raised varieties.