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They are a well-established company, but few people will have directly engaged with them outside supplier logistic chains. At least not in the past decade.

Looking at their product directory, it's all B2B

https://product.tdk.com/en/index.html

For me, TDK will always be synonymous the very best cassette tapes from my youth.

Yeah, I counted myself lucky if I could get them, or Maxwell.

Also very big in professional studio recording equipment back in the day

"Apple supplier" is a great way to get people clicking on it. It also raise the level of the company for those too young to remember TDK.