New Post Neodymium is one of 17 metals crucial to green technology. China produces 97% of the world’s supply - and they’re not selling on http://www.ecofriendlygreenmattresses.com/neodymium-is-one-of-17-metals-crucial-to-green-technology-china-produces-97-of-the-world%e2%80%99s-supply-and-they%e2%80%99re-not-selling