Specification for Printed circuit board for your reference:
1) Layer:2-24layer
2) PCB board finished thickness:0.1mm-7.0mm
3) Material:FR-4,High TG,FR-4 Halogen Free,Rogers,Teflon
4) Min. Drilled hole size:0.2mm
5) Min.Line width:3mil(0.075mm)
6) Min.Line spacing:3mil(0.075mm)
7) Surface finish:HASL/HASL lead free,HAL, Chemical tin,Chemical Gold,Immersion Silver/Gold,OSP,Gold plating
8) Copper thickness:0.5-7.0OZ
9) Solder mask color:green,yellow,black,white,red,blue
10)Shape tolerance:±0.13
Hole tolerance:PTH ±0.075, NPTH ±0.05
11)Certificate:UL,ISO 9000,SGS,RoHS
12)Profiling:Punching,Routing,V-cut,Beveling
13)Provides OEM services
14)our main market:India, North America ,EU, Asian, etc.