Glass and PET bottles carry a peculiar recycling mark. Although I am not sure about details, there seems to be a deposit system. There is a collecting machine located in a supermarket. You put the empty bottle, the machine reads the information from the label, and you get a receipt. Probably you can show the receipt to the cashier and get a refund. I have not tried yet. There are also big black collection containers on the road corner. This one does not have such refund system. Just a container.

(K. Iwao)