Carbon black manufacturer Tokai Carbon Co. Ltd. (TYO:5301) has posted its business results for the first three quarters of fiscal 2021, revealing 185.1 billion yen ($1.63 billion) in sales revenue, up 28 percent year-on-year, and 17.67 billion yen in operating income, up 137.9 percent. Looking at individual segments, the company’s carbon black business generated 72.26 billion yen in sales revenue,…