Carton manufacturers are usually used as product wrappers or items to protect the outer layer of use. The volume of the carton changes due to the size of the product. Usually there are "handle with care", "beware of moisture", "upward", "stacking limit", "be afraid of the sun", "moisture proof", "quality safety", "no rolling", " "Don't trample", "Pay attention to fire prevention", "Fragile items", "Green environment", "Be afraid of heat", "Food", "Anti-odor" and other prompts to protect the contents from harm.