There are things the will do, and things they can do, and, of course, things that fit neither category. They do most things other U.S. houses can and will do. However, most U.S. houses neither can nor will do many things that Asian houses treat as perfectly normal, and the Asian houses do them quicker, including shipping, and for less money, including shipping, and don't charge extra for those "extra" things since they're not extra in Asia.

Be sure to look at registration of silkscreen (not so critica) to mask or mask to copper.

Now ask yourself, how would you set up mask to separate the pads on a tqfp? What about on a high-pin-count BGA with 0.8 mm ball pitch or smaller ones with 0.5 mm pitch?

They're fine for "normal" boards, but if you need something precise, which you can't get at a reasonable price anywhere in the U.S. or, for that matter, anywhere in the U.S. at any price with any reliability, you have to go elsewhere.

RE