Tokai Carbon Co. Ltd. (TYO:5301) is planning to shut down one of four carbon black production lines at its Ishinomaki plant in Ishinomaki, Miyagi Prefecture, Japan. Annual production capacity will be reduced from 60,000 to 46,000 tons within 2016. The plant supplies carbon black to tire factories and rubber-parts manufacturers throughout eastern Japan. In March 2011, production stopped after the…