4 ms·It's like those labels of protected origin they put on high-quality artisan foods from the EU.by sph 6mo agoIt's like those labels of protected origin they put on high-quality artisan foods from the EU.setopt 6mo agoIt’s more like a low-background label: https://en.wikipedia.org/wiki/Low-background_steel https://en.wikipedia.org/wiki/Low-background_steelConscat 6mo agoI had never heard of low background steel. That's a fascinating problem it solves (and I love the analogy).