I e-mailed CRC and got the following reply:
Hello,
02130 and 03130 are the same item just different sku, marketed to different types of industry- 05103 while not exactly similar chemistry wise is a comparable alternative sold to our automotive industry.
My e-mail was as follows:
Can you please tell me what is the difference among these 3 products:
#05103 QD Electronic Cleaner
#02130 QD Contact Cleaner
#03130 QD Contact Cleaner
Thank you
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Here's link to the CRC catalog, where you can see what affects plastic, etc:
https://www.crcindustries.com/.../industrial-catalog/