Hong Sheng Technology LTD. -- PCB Layout Product Info.

Remarks:
Products : PCB Layout
Item No. : PCB-Layout-09
Layer count : 4
Minimum line width/space : 4.5/4.5 mil
Minimum hole size : 0.254mm
Board thickness : 1.0mm
Surface finish : HAL plus golden finger, 30 microinches
Base laminate material : FR4
Aspect ratio : 4
Impendance control: 50 ohms +/- 10%