[Eng Sub] Sputtering 

At 2:50 I repeated same sentence twice by editing mistake. Voice recording and editing are still challenging to me.

So useful. I was in LED industry for 5 years. Your videos help me to remind the led process😃😃😃

There are so many tuning knobs in detail.

Thanks for the useful knowledge in a very short video ! I've also watch your previous video about Wafer Bumping. I would like to see more in the future.

너무 좋아요!! 자세한 설명 감사합니다

I love your presentation/lecture.