Complex sentence: All travelers carrying expensive merchandise or valuables (cameras, watches, jewelry, fur products) are required to make a declaration by entering the name of the item, quantity, and price on the customs form and present both the item and customs form together.
Split into simpler sentences: All travelers carrying expensive merchandise or valuables (cameras, watches, jewelry, fur products) are required to make a declaration. When declaring, enter the name of the item, quantity, and price on the customs form and present both the item and customs form together.