This was stated in new regulations under the country’s law on fishery disease management.
The embassy of the Republic of Korea in Viet Nam has delivered an announcement about these new regulations from the country's Ministry of Oceans and Fisheries to Viet Nam’s Ministry of Industry and Trade because Viet Nam, a WTO member country, has been exporting shrimp to Korea for many years.
Korea has added frozen shrimp products to the list of seafood products that must undergo quarantine checks before entering the country from 1 April 2017. At present, frozen abalone and oyster are required to undergo quarantine checks before being exported to Korea.
Source: Viet Nam News