Highly unlikely that you'll get a straight answer - it's often treated as a trade secret, considering the many microbrands using these or those OEMs and living (or dying) by their quality/pricing/ability/responsiveness. If you search through this subforum, there are several threads discussing this - but most likely you'll have to dig for the info yourself.
(Also, I've gotten the impression that it's very beneficial to attend the annual asian watch fair - forgot the name - and contact the OEM's directly to see what's what, and not get ripped off.)
A forum community dedicated to watch owners and enthusiasts. Come join the discussion about watch collections, displays, watch winders, accessories, classifieds, and more! We welcome all manufacturers including Casio G-Shock, OMEGA, Rolex, Breitling, Rolex and Tudor, Seiko, Grand Seiko and others.