this post was submitted on 30 Mar 2026
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It's a common abbreviation. YKK owns the majority of the zipper market.
https://en.wikipedia.org/wiki/YKK
IIRC, they even had their own custom-made office computers, running their own internally developed operating system and software, during the 80s. Not sure if that was standard practice for Japanese zaibatsu at the time or just a YKK idiosyncrasy.