Re: 5 star apple screw driver
"Found the exact battery part from China (40% of apple cost) ..."
Have one of these (it is Friday after all) --->
Though you do need to take care with some of the replacement parts (even the branded Apple parts are probably from China, so it's not the nationality) as they may be poorer quality - possibly more prone to catch fire, or lesser capacity.
There is a difference between noname and branded replacements: I've repaired my wife's phone's screen with both types and the Nokia branded part doesn't cause the phone to freeze and require a reboot and didn't cost all that much more than the noname brand.