Feature Year 2007 Year 2008 Year 2009 Year 2010
Production Capacity 2100kft2/month 2600kft2/month 2700kft2/month 2700kft2/month
Layer (Mass Production) 1~26 Layers 1~30 Layers 1~32 Layers 1~32 Layers
Impedance Control ±8% ±8% ±8% ±8%
Minimum Thickness of CCL 3.5mil (including copper) 3.2mil (including copper) 3.0mil (including copper) 3.0mil (including copper)
Board Thickness 6~240mil 6~260mil 6~280mil 5~280mil
Copper Clad Laminate FR4 & Halogen Free & CEM-3 & FR5 & PTFE & Rogers & Getek & BT & Polyimide FR4(Dciyfree) FR4 & Halogen Free & CEM-3 & FR5 & PTFE & Rogers & Getek & BT & Polyimide FR4(Dciyfree) FR4 & Halogen Free & CEM-3 & FR5 & PTFE & Rogers & Getek & BT & Polyimide FR4(Dciyfree) FR4 & Halogen Free & CEM-3 & FR5 & PTFE & Rogers & Getek & BT & Polyimide FR4(Dciyfree) &Thermal Prepreg &Aluminum/steel base
PCB external dimension tolerances (Routing) ±5mil ±4mil ±4mil ±4mil
Tolerances for PTH  hole ±3mil ±2mil ±2mil ±1mil
Tolerances for NPTH hole ±1mil ±1mil +0/-1mil +0/-1mil
Inner etching Min. Line/Space 3.5mil(A/W) 3mil (A/W) 2.5mil (A/W) 2.0mil(A/W)
Line Width tolerance ±10% ±8% ±8% ±5%
Board Thickness (Min.) 3.5 mil( including copper) 3.2 mil(including copper) 3.0 mil( including copper) 2.5mil (including very thin copper)
Plating Hole Min. Hole Size 6mil 6mil 6mil 6mil(drill)
Aspect Ratio(max) 8 10 12 12
Position Accuracy ±2 mil ±1.5 mil ±1.5 mil ±1.5 mil
Microvia Min Hole Size 4mil 4mil 3mil 3mil
Aspect Ration(max) 0.75:1 1:1 1.25:1 1.25:1
Outer Etching Min. Line Width/ Space 3.5/3.5mil(A/W) 3/3mil(A/W) 3/3mil(A/W) 2.8/2.8mil(A/W)
Line Width tolerance ±0.35 mil ±0.30 mil ±0.30 mil ±0.30 mil
Solder Mask Bridge 3mil 3mil 3mil 3mil
Position Accuracy 1.5 mil 1.5mil 1.5mil 1.5mil
Press Thickness Tolerance 10% 8% 8% <7%
Wrap/Twist 0.75% 0.60% 0.50% <0.5%
Inner Opening(min) (1)4/L:6mil;       
(2)6/L-8/L:7mil;  
(3)8/L or above:8mil 
(1)4/L:5.5mil;        
(2)6/L-8/L:7mil;   
(3)8/L or above:8mil 
(1)4/L:5mil;        
(2)6/L-8/L:6mil;   
(3)8/L or above:7mil
(1)4/L:5mil;        
(2)6/L-8/L:6mil;   
(3)8/L or above:7mil