There Tin species: 1,63 / 37 solder (Sn63 / Pb37) 2, electrolysis of pure tin (tin of high purity electrolytic treatment) 3, anti-tin oxide (add high in antioxidants) 4, wave soldering tin (for crest welding) 5, high temperature solder (400 degrees welding) by the above description. You are welcome to buy. When buying solder, and the solder is good or bad and coupler is not very professional people can only see a single judge joints, solder manufacturers, sometimes unscrupulous sellers may buy sell lack the degree of solder. Prevent buy the lack of degree solder, solder Hainan, the following describes how to distinguish between the content of the solder. 35 and 40 degrees and 40 degrees to distinguish bad solder joints is only a small part of the top of the white, bright accounted for around 70% -80% on top of pads 35 of the total white whole solder joints of 60% -65 %, the total weld four 周发亮 35% -40% of the solder Unit _ FUJIE solder (Online) _ Hainan solder provided by Zhengzhou City Fujie solder materials Limited. Zhengzhou City Fujie Soldering Materials Co., Ltd. (www.fujiehanxi.com) (www.fujiehanxi.com) is Zhengzhou, electronics, electrical products processing leader, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness , the maximum meet customer needs. In FUJIE solder leadership with the staff warmly welcome all inquiries negotiations to create FUJIE solder a better future.