Two months after raising a blockbuster IPO on Shanghai's STAR Market, ChangXin Memory Technologies is plowing billions back into the ground, signaling that its

Two months after raising a blockbuster IPO on Shanghai's STAR Market, ChangXin Memory Technologies is plowing billions back into the ground, signaling that its ambitions in advanced memory chips are far from priced in — and neither are the risks. CXMT's $5.2 Billion Bet on Catching Samsung Raises th…