Now many of the solder wire products are written in a few percent of silver, but they don't have these signs before. What about this? Let's let the soldering wire manufacturer expose the secret below
In recent years, the concept of environmental protection gradually, before the use of solder wire lead will cause great pollution, but the use of silver enhanced electrical conductivity and environmental pollution is greatly reduced, the production of silver solder wire, now on the market a lot, the price with the silver content has a great relationship.