Shin-Etsu Polymer Co. Ltd. (TYO:7970), a processing manufacturer of polyvinyl chloride (PVC) and silicone rubber products, has reported 79.34 billion yen ($722.47 million) in sales for fiscal 2017, up 7.3 percent from a year prior. In other metrics, the year saw Shin-Etsu Polymer generate 7.21 billion yen in operating profit, up 30.7 percent; 7.27 billion yen in ordinary profit, up…