my friend lost his departure card, can he still extend his visa for 30 days from immigration division 1 or there will be a problem for him?
TLDR : Answer Summary
Yes, your friend can still extend his visa for 30 days even if he lost his departure card. He can obtain a replacement departure card at any immigration office, usually for a fee (though in some cases, it may be free), and it's advisable that he also checks if a police report is necessary for the replacement.