Badge "Vinalon".

[Olegoss]

There is "Rivers of vinalon" badge. On the bottom 비날론 - "vinalon".
May be late 1960's. Who knows?

[CtahhR]

Looks to be a 1960's vintage. I have also seen this Badge prevously but not frequently.

There's that Chollima again.

[GabrielMk3]

I've seen it, once. I don't know what Chollima has to with this. Maybe... Thousand miles of vinalon produced? Haha

But it might actually be something about 1000 of xxxx?

Oh, and I remember seeing Jinsong in the DPRKian KPA clothing, which might be the Jinsong Chemical Company.

[CtahhR]

Here is another Badge "Vinalon". This example looks to have been in an industrial accident. I believe these date from 1961 and were awarded to construction workers of the 8th September Works.