| Material Certificate | SGS, ROHS etc. | 
| Surface Treatment | anodizing,blackening,electroplating,painting,powder coating,passivate,carburize etc. | 
| Finish | polished,mirror polished,brushed, sandblasted, heat treatment etc. | 
| Tolerance | +/-0.002mm or +/- 0.00008 inch | 
 
  
  
 