There are generally waterproof signs, upward signs, fragile signs, anti-trampling signs, trash can signs, and recycling signs on the outer boxes of goods.

Waterproof signs, upward signs, fragile signs, and anti-trampling signs are used to protect goods.

Trash can signs and recycling signs are mandatory by law in some countries for garbage recycling and reuse.

It is possible to circulate within China without these marks.

But it is necessary in some countries, such as the United States, Canada, Singapore, Japan, etc.