Nishikawa Rubber Co. Ltd. (TYO:5161) has reported 22.1 billion yen ($200.34 million) in sales, up 2.3 percent year-over-year, and 1.96 billion yen in operating profit, up 9.8 percent, for the first quarter of the fiscal year ending March 2018. Ordinary profit for the quarter increased 34.5 percent to 2.66 billion yen, while net profit was 1.91 billion yen, contrasting a…