Most of my female friends seem to like cosmetics (but, not L'Oreal or Estee Lauder because both are widely available in China), jewelry, and handbags (for some reason, Michael Kors is a big hit).
Liquor and wine also seems to be well received, even for non drinkers and for brands that are easy to buy in China. Food products can be good too, and you can buy a lot of stuff at Costco for $100.