Prevent buy the lack of degree solder, solder effect, 35 and 40 degrees and 40 degrees to distinguish bad solder joints is only a small part of the top of the white, bright around 70% -80% of the solder, solder Xinyang solder joints whitish top 35 degrees accounted for 60% -65% of the solder joints, four joints across the top pad 周发亮 representing 35% -40% 30 degrees 80% of the entire white pad, only There are lights around the bottom edge of the 45-degree joints basically all lit up only the top 5% -10% of the entire white solder bar solder species: 1,63 / 37 solder (Sn63 / Pb37 ) 2, electrolytic pure tin (tin of high purity electrolytic treatment) 3, anti-tin oxide (add high in antioxidants) 4, wave soldering tin (for wave soldering) 5, high temperature solder (400 degrees welding) soldering of the plant, FUJIE solder (certified), Xinyang 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.