Methods of chemical analysis for phosphor copper ingots
2.
Phosphor copper metal
3.
Fittings dept . : the spectacle fittings has novel style and complete breed whose main material are brass , cupronickel , phosphor copper , nickel , mangansese alloy , aluminium magnesium alloy , stainless steel , memory metal and other kind of hardware goods fittings and so on
मोबाइल