Total production volume of synthetic rubber fell 9.6 percent year-on-year for the month of September 2016, dropping to 128,830 tons, according to the Synthetic Rubber Industry Association of Japan. It represents a regression back from what was a positive year-on-year total the month prior. Outside of styrene-butadiene rubber (SBR), which saw a 1.9-percent increase, year-on-year declines were witnessed across all…