1 Plastic bags can carry trademarks. According to relevant public information, 1 plastic bags can contain one trademark or two trademarks, a commodity can be registered with two or more trademarks, and a trademark or another label of the same commodity can be affixed to the packaging of the commodity, and one can be placed one by one. Trademark is a sign used to identify and distinguish the source of goods or services. Any sign that can distinguish the goods of natural persons, legal persons or other organizations from the goods of others, including words, graphics, letters, numbers, three-dimensional signs, color combinations and sounds, and the combination of the above elements, can apply for registration as a trademark.