Pure copper bar C11000 T1 T2 T3 T4 1.SGS/RoHS 2.Sample free for testing ... size 4.Short lead time Pure copper bar C11000 T1 T2 T3 T4Chemical components:Cu+Ag P Bi Sb AS Fe ... etc.Categories of Chinese red copper:1.common copper (T1, T2 and T3, T4)2.oxygen-free copper (TU1, TU2 and ... , silver copper,beryllium copper,etc ) Red copper rod C11000 T1 T2 T3 T4