Fujitsu Siemens PTT5 1, is it made by Taiwan Province Volkswagen?

Fujitsu Siemens notebooks are indeed given to Volkswagen for OEM, such as Amilo O2000 series and Amilo3000 series. However, I am sure that Fujitsu Siemens notebook does not have this model. PTT50DJ is probably the unified name of a quasi-system. What you bought must be fake, not authentic Fuxi.