... Sn45Pb55 .made of pure tin and copper from Yunnan Tin high quality tin welding bar for tin box welding iron soldering We're ... )Shape & tolerance: barAppearance: lucent, no dirt on surfaceWeight: 15KG/box or soFeatures: made of pure tin and pure copper from Yunnan Tin ... is specialized in producing and selling tin products.Such as tin solder bars,tin solder wires,tin ingots,anode stubs,soldering flux, ...