1. Before designing a multi-layer PCB circuit board, the designer needs to first determine the board structure based on circuit scale, board size, and electromagnetic compatibility (EMC) requirements—deciding whether to use 4, 6, or more layers.

2. After determining the number of layers, decide where to place the internal electrical layers and how to distribute different signals among them. This is crucial for choosing the multilayer PCB stack structure.

3. The laminated structure significantly impacts the PCB’s EMC performance and serves as a critical method for suppressing electromagnetic interference.

4. Factors in determining the laminated structure include the wiring complexity: more layers facilitate better routing but increase manufacturing cost and difficulty.

5. For manufacturers, whether the laminated structure is symmetrical is a key consideration during PCB production. Thus, selecting the number of layers requires balancing various needs to achieve the optimal solution.

6. Experienced designers, after completing the preliminary layout of components, will focus on analyzing PCB wiring bottlenecks.

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