✅ If you're packing the items in your checked luggage:
Go to customs before security control with your invoice, passport, flight ticket, and unused goods.
⚠️ If you don’t have your flight ticket yet, you may be required to:
Get your ticket at the check-in desk.
Visit customs for approval.
Return to the check-in desk to drop off your luggage.
✅ If you're bringing the items onboard (hand luggage):
You can visit customs either before or after security control—but check first if there is a customs office after security at your departure airport.
In all cases, be prepared to show your invoice, passport, flight ticket, and unused goods to customs.