Instead of sourcing/buying component in China, do you consider to do it via Hong Kong. You can find a lot of electronic parts vendor in China. But there are no shop or website like digikey in China.
There is one I know of that has fast local delivery for Shanghai and doesn't have huge delivery charge like China version of Digikey, mouser or RS-online (They usually have $30 delivery charge plus have to wait for custom clearance). It's a local distributor: **broken link removed**. Our company uses it for small quality part order in China.
Dear friend, I find one like that website. such as lktown.
As I have searched, this store can ship to almost all countries throught the world. It provides all ranges of products, as you want IC.