In the domain of PCBA for consumer products, miniaturization and integration are realized through high-density integration technologies to accommodate more components in limited space. Meanwhile, cost control is ensured by using cost-effective components and optimizing production processes to reduce manufacturing expenses. **Reliability and durability** are critical, requiring adaptation to daily scenarios—such as resistance to vibration in wearable devices during exercise or electromagnetic interference in home appliances’ complex environments—backed by strict testing like high/low-temperature aging and drop tests for long-term stability. Additionally, rapid iteration keeps pace with consumer electronics’ update cycles, supporting fast design revisions for new sensors or charging protocols while enabling production lines to flexibly adjust processes for different component sizes.