Lead-free tin strips are mainly made from a variety of non-metallic materials, as well as some new types of mineral raw materials, through special processing techniques. The main components of lead-free tin strips are 99.3% tin and 0.7% copper, solid, silvery white, tasteless, melting point is 227 ° C, working temperature is 250 ° C-280 ° C, and the solder joints are brighter, which is used for higher demand welding. As tin is in constant contact with the air, a chemical reaction occurs to produce tin slag oxides. During the soldering operation, the strip of tin changes from solid to liquid through high temperature, which will greatly accelerate the oxidation rate of tin, and the tin slag will be more and more. Environmental protection tin bars are widely used in wave furnaces and hand immersion furnaces. Lead-free tin strips have the following characteristics: 1. Environmental protection RoHS standard, suitable for wave crest or hand immersion furnace operation. 2, the solder joints are bright, full, and will not be defective. 3. Add sufficient amount of anti-oxidant elements, strong anti-oxidant ability. 4. Made of pure tin, less tin slag, reducing unnecessary waste. 5. The solder joints are bright, full, and will not cause bad soldering. 6. Electrolytic pure tin, with good wettability and fluidity, easy to get tin. 7. Stable performance, suitable for wave crest or hand immersion furnace operation.