Seaweed knots suitable for dashi?

I sent my sister off with a shopping list that had kombu on it. I wanted to make shitake kombu broth. The store owner gave her seaweed knots origin China. Can I use those, is that the same seaweed?

Its this product:

https://www.ugou.de/product/jzw-dried-seaweed-knot-100g/

submitted by /u/Adventurous-Notice72
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