And you think that someone from Fujitsu (where it's 8 in the evening, BTW) is going to jump in here and explain their factory layout to you, because you've put your foot down? The best general answer you are going to get is "They made it using whatever process they used to make prototypes. Probably". You want names, ranks, and serial numbers - try writing to Fujitsu. Preferably while being more polite.