1. Exclamation marks are generally used at the end of single-sentence slogans, and banners are generally not used.

2. For two or more slogans, use a comma in the middle and an exclamation point at the end.

For the specific situation, generally speaking, there are mainly the following:

Use commas as adverbials to coordinate predicates, complements and prepositional phrases;

Pause is used for coordinate attributives and adverbials, and pause is used for coordinate predicates if the objects are the same;

The coordinate components of the subject and object are long with commas, short with pause, and the same attribute is also modified with pause.

In particular, some collective words cannot be separated by pauses. Here are some: primary and secondary school students (can not be written as "primary and secondary school students", the same below), urban-rural exchanges, provincial and municipal leaders, universities, workers, peasants and soldiers, investigation and research, and police officers.