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Vinylon, a synthetic fibre made from coal and limestone is a north korean specialty. https://en.wikipedia.org/wiki/Vinylon https://en.wikipedia.org/wiki/Vinylo
by wycx 10y ago
Vinylon, a synthetic fibre made from coal and limestone is a north korean specialty.
https://en.wikipedia.org/wiki/Vinylon https://en.wikipedia.org/wiki/Vinylon