It's a mistake to assume wafer clamp rings have to polyimide. Several other work about as well. Silicon wafers aren't the only things that lose material in the various etching steps of IC ...

Mass spectrometry, by contrast, is a powerful technique for the analysis of any process gas. Careful consideration of differences in pressure, reaction time scales and process flow is essential for ...

Please Note: Blog posts are not selected, edited or screened by Seeking Alpha editors. www.shcri.com - In the 10 major equipment for solar cell production lines, 8 types can be made in China, of which ...