Sojjitz's stake in Masan unit aims to cut reliance on China for metal used in machine tools, chips Masan High-Tech Materials mines and refines tungsten at a site in northern Vietnam.
Sojjitz's stake in Masan unit aims to cut reliance on China for metal used in machine tools, chips Masan High-Tech Materials mines and refines tungsten at a site in northern Vietnam. (Photo by Yuji Nitta) TOKYO/HANOI -- Japanese trading house Sojitz will take a 5% stake in Vietnamese tungsten miner Masan High-Tech Materials, diversifying its supply of a critical metal for which China controls roughly 80% of global production.