Hi,friend,
Have a nice day
Glad to know you're on the market for the 
pcb ,we are manufactory over 15years, specializing in this field with good 
quality and pretty competitive price.We produce PCB 1-12 layers.
Line width/space: 3mil
External 
copper: 7Oz 
Good quality comply with UL, RoHS and ISO 
9001:2000 and SGS 
More details,call me,let's talk.
Best regards/ Jasen Li
Nature Precision Electronics 
LTD         jasen(at)naturepcb.com