Tokai Carbon’s first quarter results for fiscal 2023 saw net sales of 86.53 billion yen ($636.37 million), up 24.5% year-on-year; operating income of 11.49 billion yen, up 44.8%; ordinary income of 11.8 billion yen, up 40.4%; and net income of 7.96 billion yen, up 96.9%. By segment, the carbon black business posted sales of 37.46 billion yen, up 27.1%, and…