English
français
Deutsch
русский
italiano
español
português
العربية
日本語
한국의
luna@powerwaywafer.com
powerwaymaterial@gmail.com
2020-03-17
2020-03-09
A scratch is dened as a singular cut or groove into the frontside wafer surface with a length-to-width ratio of greater than 5 to 1, and visible under hight intensity illumination.