By all means, if you are looking for high quality medical components, stay away from the far east, they will burn you. In my experience, QUALITY in the far east is more of an accident then a target. For the best components, stay in the US. For the best price for small, high volume parts, do a search for machining vendors advertising Swiss Screw Machines. Very, very capable macines that can make very accurate and economical parts.
Sorry to be so rough on the asians, but I have been burned before and you can't ignore the issues that keep coming from there about quality.