Tokai Carbon Co. Ltd. (TYO:5301) President Hajime Nagasaka has unveiled T-2023, the company’s new three-year medium-term management plan. The company aims to end the plan in fiscal 2023 with record-high sales revenue of 320 billion yen ($2.94 billion), as well as operating income of 57 billion yen, an ROS figure of 18 percent and an EBITDA of 86 billion yen….