1. Box number writing position: the box number is directly printed on the box, and no extra filling is required.

2. Writing rules of container number: the container number consists of 1 1 digit, the first four digits are the container main code, the fifth to sixth digits are the container length, and the seventh to eighth digits are the container type. It should be noted that each box has a unique box number, which should be checked when filling in to avoid duplication or mistakes in the box number.