What is your concern? Most places I think use stunning to appease animal lovers. You are most likely gonna have to call them to find out where they get their meats from. Then call that company or companies. (May not be just one source) I assume it will take some detective work... you can probably use this site for assistance https://www.zabihah.com/chn/us
No clue. Maybe call their corporate headquarters?
Doubtful
Thanks! Your answer is awaiting moderation.