Solder bars produced by Yunnan Tin Industry Company

Hello! There are many kinds of tin, lead-free, lead and 63A? 55A？ 60A, lead-free 99.3? 99.99, 96.5 and other models, no counterfeiting, (national) recycling of waste tin, tin bars, tin ingots, tin slag, tin blocks, tin wires, you can ask me specific questions and try your best to answer them for you.