Bridgestone Corp. (TYO:5108) has released its business results for the first half of calendar 2018, showing 1.9 percent year-on-year sales growth to total 1.78 trillion yen ($15.98 billion) for the period. Meanwhile, the company’s operating profit fell 1.4 percent to 199.43 billion yen, ordinary profit was down 2.6 percent to 190.76 billion yen, and net profit was up 2.1 percent…