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

Remarks:
Products : PCB Design
Item No. : PCB-Design-07
Layer count : 4
Minimum line width/space : 4.5/4.5 mil
Minimum hole size : 0.25mm
Board thickness : 0.5mm
Surface finish : electroless silver; 2 microinches
Base laminate material : FR4
Aspect ratio : 2