... process 4.Sn-8Zn-3Bi , lead free type tin solder details :Shape&Tolerance:WireAppearance:Surface bright , no ... you need other special diameter. FeaturesTin solder include Tin-Lead solder bar and Lead-free solder bar. ... in radio, communication, meters, instruments and copper, tin and irons and etc.2) Residue is easy to ... to match with this kind of the tin solder bar or wire. We have three types of this ...