23 febrero 2015
Numerous metallic elements are regarded as «critical»: on one hand, they play an ever more important role in so-called future technologies and on the other, there is a high risk of supply bottlenecks. Small and medium-sized companies are also affected by this, and they are often not sure which of these materials they are dependent on.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/QmCJyvi49Bo/150223091823.htm
