1. Main materials (copper foil, protective film, reinforcement and adhesive backing, etc.);

2. Auxiliary materials (dry film, film, steel mesh, pure film, electronic components);

3. Surface treatment (chemical nickel gold, electroplating nickel gold, electroplating pure tin);

4. Assembly utilization rate;

5. Board composition (single sided, double-sided, multi-layer, etc.);

6. Special requirements (width and thickness of the circuit, size of the vias, thickness of surface treatment, adhesion of special materials, etc.);

7. Labor costs;

8. Cost of additional components on FPC (foam, components)

The performance of FPC needs to be verified through testing, including appearance testing, electrical performance testing, and environmental performance testing. The basic standards for testing include the appearance of substrate film and covering layer, coating process, deviation of connecting disc and covering layer, voltage resistance, bending resistance, welding resistance, temperature and humidity resistance, salt spray performance, and so on. In FPC soft board testing, the elastic micro needle module can withstand a high current of 50A. In the field of small pitch, it can adapt to pitch values between 0.15mm-0.4mm, has stable contact without pin jamming, and has an average service life of over 20w times. It does not need to be replaced frequently during testing, and its performance is stable and reliable.