Legal analysis: The categories of trademarks include words, graphics, letters, numbers, three-dimensional signs, color combinations and sounds.

legal basis: article 8 of the trademark law of the people's Republic of China, any sign that can distinguish the goods of natural persons, legal persons or other organizations from the goods of others, including words, figures, letters, numbers, three-dimensional signs, color combinations and sounds, and the combination of the above elements, can apply for registration as a trademark.