Podcasts > Kategorie: Wissen und Wissenschaft > Kanal: BrainStuff

Why do most zippers say 'YKK' on the pull-tab?

Kategorie: Wissen und Wissenschaft
Kanal: BrainStuff
Datum: 13. April 2012, 21:49
Stufe: B1-B2 (Mittelstufe)

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Have you ever wondered why zippers often have the letters 'YKK' etched into them? Learn more about the Japanese company behind the tiny letters -- and the zippers -- in this episode. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers