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Today, in consequence of the process of solder electrical appliances and electronics industry have used metal solder (Solder), which has a mixture of lead and tin (Sn - Pb).European Commission, or an e-CD (EC - European Commission), which is an organization that sets policy and the management of its sister countries in the European Union (EU - European Union) issued regulations on 1 July.dead.2006, lead is prohibited substances in accordance with the regulations and RoHs WEEE result, electrical appliances and electronics industry is essential to have a development of metal solder Lead (Lead-free solder).But in the process of metal solder solder is not only factor that affect the ability to solder to a metal surface (Substrate) and some washing-up liquid Co (Flux). The result as well. So it has to be said that the metalwill result in the ability to solder the metal pieces and the strength of the seams. More
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