SIM Application Toolkit. SIM Application Toolkit (commonly referred to as STK) is a standard of the GSM system which enables the Subscriber Identity Module (SIM) to initiate actions which can be used for various value-added services.
Cook them immediately if they have been thawed for no more than three days! Once you cook them they will last at least for another four or five days in the fridge! If nothing else put them in a good shrimp marinade for about one half hour - then SMOKE them over mesquite or hickory wood for one hour. These will be eaten up before five days is over! Good Luck & Bon Aperitif!
Safe thawing ensures that you do not become sick from inactive bacteria that become active again when the internal temperature of the cooked shrimp rises above 40 F. Transfer cooked shrimp from freezer to refrigerator the night before, giving the cooked shrimp time to thaw before eating.