Hello, the requirements for writing the claims of a patent application are that there should be no line with the name of the invention or utility model patent application at the beginning, and they should be sorted directly by the numbers 1, 2, 3... Generally, the number 1 should be the independent claim, and the dependent claims should be numbered 2, 3... The independent claim consists of a preamble and a characterizing part. There should be at least one independent claim in the claims of an application. However, since two or more inventions or utility models with the same concept can be filed together, there may be two or more independent claims. These two or more claims have independent legal significance and are parallel claims, but one should be identified as the main one and written first, which is called the first independent claim. Each independent claim may have multiple dependent claims. In short, claims are an important document in a patent application. They are based on the description and are used to limit the scope of protection of the patent application. They are also the legal basis for determining whether infringement occurs when infringement disputes occur in the future.