SONY CORP. ADRs $27 (www.sony.com) has started selling its new PlayStation 4 video-game console in China. The company has sold 20.2 million units since it launched the new version in November 2013. However, Chinese gamers tend to prefer playing on personal computers or mobile devices, so it is unclear if they will buy the PlayStation. Moreover, government controls on content limit the number of games people can play online. Hold.