Okamoto Industries Inc. (TYO:5122) has seen its sales for the first quarter of fiscal 2018 rise 6.2 percent year-on-year to 22.47 billion yen ($203.93 million), according to a recent release of business results for the period. These results also show the company’s operating profit for the quarter as having risen 2.1 percent to 2.89 billion yen, while ordinary profit was…