1.Soldering tips SGS approval 2.Lead free environmental soldering tips 3.Solder fluent,long life span. ULUO 500M series lead free soldering tips:1.The soldering tips' raw material is oxygen-free copper production,fast heat conduction.2.Soldering tips appearance with special machinery and production process,size accurate.3.Solder fluent,long life span.4.Adopt the new plating process,corrosion, ...