5: Conductor Type: Plating: Pure silver Accessory Material: Ni, Cdo, SnO2, Cu. . Techniques: Pre- Oxidation (S. P. ) Machinery mixed (M. M) Co- Precipitation (C. C. ) Machinery alloy (M. A. ) Internal oxidation (I. O. ) 6: Package: 5- 20kg/ pack inner package: vacuum plastic bag outside package: carton packages can be made to your requirements.