To prevent quality issues with FPC, we can start from the following aspects:

1. Design optimization: In the design phase of FPC, fully consider its application environment and usage requirements, carry out reasonable wiring and structural design, and avoid problems such as overload and short circuit.

2. Raw material selection: Select high-quality and reliable substrates, covering materials, and metal conductors to ensure the basic quality of FPC.

3. Production process control: Strictly control each link in the production process, such as etching, lamination, drilling, etc., to ensure that the process parameters meet the requirements and avoid defects and defects.

4. Quality inspection: Set up appropriate quality inspection points during the production process, conduct comprehensive inspection and testing of FPC, and promptly identify and solve quality problems.

5. Storage and transportation management: Pay attention to the storage conditions of FPC, avoid moisture, heat, compression, etc., and take protective measures during transportation to prevent damage.

6. Supplier uation: Select FPC suppliers with good reputation and reliable quality, and regularly uate and audit the suppliers.

7. Personnel training: Provide professional training to production and testing personnel to improve their skill level and quality awareness, ensuring standardized operation and accurate testing.

8. Quality Management System: Establish a sound quality management system to comprehensively control and manage the production process of FPC.

The comprehensive implementation of the above measures can effectively prevent quality issues in FPC, improve product reliability and stability. Of course, specific preventive measures also need to be formulated and implemented according to the actual situation.