We are a manufacturer of 2mm Solder Core Wire 40/60 Sn40Pb60 200g/Roll for Wholesale from China. This solder wire is composed of 40% Tin (Sn) and 60% Lead (Pb), ensuring excellent thermal and electrical conductivity but product cost remained at affordable level, making it a go-to choice for both professionals and hobbyists. Solder core wire is tin lead ally cast into wire form and then rolled into a plastic reel, with a built-in rosin flux core solution. Read More