Preventively maintain diffusion process tool. Trouble shooting in mechanism alarm. Particle SPC monitoring. FDC analysis and treatment. Essential parts replacement and overhaul. ．Retrofitted air-driven valve tape heater to solve by-product condensation, increased valve lifetime from 3 month to 12month. ．Upgraded FDC pressure manometer monitoring item detecting main vacuum valve leakage rate, collected usage duration, enacted replacement schedule to reduce tool down time. ．Formulated tool PM SOP and developed training procedure to ensure all colleagues are familiar with PM items. ．Installed and qualified TEL furnace tool in nitride deposition system.

Lead SMT section of 100 employees including taiwanese and Filipino. Production line daily move control. Yield analysis and improvement. Operator manufacture and clean room environment audit. Technical document writing and auditing. ．Maintained and standardized process SOP and perform the operator training, the miss-operation rate decrease 20 percent. ．Established and test printing stencil bar-code system, avoid the risk of misuse and control the stencil usage limit. ．Refined printing stencil aperture, the solder paste can be melt and attach electrical components to IC carrier board steadily, increase about 10 percent yield. ．Accompany and passed western customer audit about process line environment, 6S, material control, quality control and operator manufacture.