Mailbox entrance, start to prevent redistribution of large net mail order

The mouthpiece of the mailbox is getting bigger at first. A gap of about 2.5 centimeters was mainly used as a mailbox for collective houses so that hands would not enter from outside, but the type of 3.6 cm increased, and the largest manufacturer accounted for about 30% of the shipment volume. Japan mail that wants to reduce redelivery so that a small box that arrives via online mail order will enter will boost popularization.

(https://newspicks.com/news/2485598?ref=user_1419961)