Introduction of Digi-Key.
Digi-Key China is a service office. They don't have any inventory in China right now, so useless.
They have a pretty complete inventory of products, even some hard to find ones. You can get almost everything you want from them of electronic parts. Their inventory is located in USA.
Prices are quite reasonable. It is a good price for prototype batches(<100). Very nice offer for hobbyist, you can orders every components with low volume.
USA 1-3 days
To British Columbia Canada 1-3 days
To Denmark 5 days.
To China 5-7 days.