Can I use the key of the letter box of China Post?

Yes According to the inquiry of China Post official website, the key of the letter box can be universal, so that the staff can better manage and obtain letters, and both the postman of the post office and some staff of the delivery company have it. As one of the supporting products of newly-built residential areas and office buildings, the letter box is not only an important carrier for users to receive mails and various bills, but also becomes a decoration of buildings with the continuous upgrading of products and the innovation of surface treatment methods.