Nvidia may finally be able to sell its advanced chips to a huge market: China.Nvidia (NVDA 3.30%) has been a powerhouse stock to own in recent years. Every time its valuation looks like it's getting a bit expensive, the stock continues to rise even higher. As of Tuesday's close, the stock was up 38% since the start of the year. It's especially impressive when you consider that it soared 171% last year and 239% the year before that.While the returns have slowed, they are still incredible. By comparison, this ...