to begin with, we always have meetings and brainstormings... My Logitic and purchasing staff is an Automotive engineer from India, my sponsor is an Industrialist... Basically - all the suppliers and OEM manufacturers have their engineers as well. We interact with them and I chose the products or items... We get their CAD files and we place this in our computer model.
this way, we save huge time and money.
It's really no nuclear science.
I used to work for a thrid party Korean logistics company caterring the electronics industry in EPZA. I was Managing and QMR - Representative... It was basically the same kind of work.
this is how the Koreans made it in their automotive Indsutry... they treated it like just another small company. and with little steps.. They made it into a giant.