Zongxuan,
I have seen a presentation in the past from Martine Simard-Normandin from MuAnalysis in Canada where she was analyzing the mold compound of counterfeit components. I think this would be a good resource with a wealth of information. You could look the company up online, or even send an email to info@muanalysis.com as a starting point.
Regards,
Chris
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Chris Richardson
Manager X Prep Products and Applications
Allied High Tech Products Inc
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