1. Process Development & Optimization - Develop, set up, and optimize SMT processes for line expansion and new models 2. Line Expansion & Equipment Installation - Lead SMT line expansion and new equipment installation 3. Yield & Defect Improvement - Lead yield improvement and defect reduction through program & process optimization 4. Technical Support & Troubleshooting - Provide technical support and solve process issues across SMT steps (PCB Loader → Solder Paste Printer → SPI → Pick & Place → Reflow → AOI → Unloader) 5. Customer Feedback Analysis & Root Cause Investigation - Analyze customer feedback and quality issues, perform root cause analysis, and implement effective corrective actions to prevent recurrence 6. Traceability & Process Data Management - Implement and manage traceability systems (barcode, MES), linked SPI → Placement → Reflow → AOI data for complete traceability 7. Maintenance & Equipment Reliabili...