There's a new red-hot memory chip stock in town, ChangXin Memory Technologies (CXMT), a lesser-known Chinese company that most investors probably never heard of before its blockbuster IPO and 531% single-day surge, as well as reports swirling around business with Apple (NASDAQ:AAPL | AAPL Price Prediction) as it looks to diversify beyond the Big Three memory makers amid the global supply crunch. ...