... in a reel. 2.Silver plating Characteristics of Tinned copper wire :high precision of the diameter, even elongation, good conductivity ... storageMODEL:TXRNAME:Tin Plated Copper Wire/tinned copper wireDIAMETER: 0.03mm-0.30mmMaterial & Production standard 1.Copper Wire GB/T3953-832.Tin ... to GB728,Tin lever is above 23.Tin Plated Copper Wire GB4910-1985Resistivity Normal Diameter mmResistivity Ω·mm2/m,at ...