Following a period of instability over the past five years, when an influx of glass from China filled a rising demand for wine bottles, glass producers and distributors now see the market stabilizing. There seems to be no shortage of glass for winemakers, and improvements in technology have mollified many concerns about the quality of Chinese wine bottles entering the U.S. On the domestic front, the first U.S. wine bottle factory to open in decades fired up its furnace in Kalama, Washington thi...