<正>THE closure of Shanghai-based home décor chain La Maison last March struck a dissonant note in the cheerful theme song that Saint-Gobain, the Fortune 500 company that owns it, blares in Chinese marketplaces. The case brings to mind the sudden exit of other international brands and Chinese branch offices, most recently Best Buy and Barbie. Look a little further back and we recall Bertelsmann shut down all its 38 bookstores in China