PCB Manufacturing Services

In general, what is the thickness of surface finish for a printed circuit board?

Please find below a brief description of the thickness of surface finish for a printed circuit board:
Surface Finish
JetPCB Capabilities
General Thickness
Max. Thickness(please contact our sales representative)
Notes
HASL
HASL pb free
0.7mil
(17.5μm)
1.2mil
(30μm)
 
ENTEK/ OSP  0.4μm    
Immersion Tin (ImSn)
30~40μ"
   
Immersion sliver (ImAg)
6~8μ"
   
Immersion gold (soft gold) 3~5μ" 12μ" The general thickness for immersion gold is 100~120μ". If your specification is beyond this range, please contact our sales representative. For your information, our capabilities for such service can be reached to 350μ".
Gold Plating
3~5μ" 
50μ"  
ENEPIG 3~8μ"    

The above mentioned are FYI, thank you.