1. Metal: Aluminum: 2024,5052,6061,6063,6082,7075 (T6) etc.
Steel: carbon steel (No.10,15,20,25,30,35,40,45...80).
alloy steel (15Cr,20Cr,42CrMo) and other etc.
Stainless steel: 201,2202,301,302,303,304,316,317,420,430,440,630 etc.
Brass,copper,bronze: H62,H65..H90,HA177-2,HPb59-1,HSn70-1 etc.
2. Material Certificate：SGS, ROHS etc.
3. Surface Treatment：anodizing,blackening,electroplating,painting,powder coating,passivate,carburize etc.
4. Finish:polished,mirror polished,brushed, sandblasted, heat treatment etc.
5. Tolerance:+/-0.002mm or +/- 0.00008 inch
6. Surface Roughness:Ra0.4 (milled or turned without polishing or grinding)
7. Color:anodized(black,silver,blue,gold,red,green,pink etc.), painting(all colors)
8. Logo Method:laser engraving, CNC engraving, screen-printing etc.