TOKYO -- Prices of tungsten and other industrial metals have risen sharply since China, a vital supplier, tightened export restrictions.
Vietnam sees rising interest from Europe as alterative supplier

A tungsten mining facility in Zhongshan, China. The country holds an 81% global share in the resource. © Reuters
TOKYO -- Prices of tungsten and other industrial metals have risen sharply since China, a vital supplier, tightened export restrictions.