Product: Soldering Flux Paste Attributes: Neutral PH7 ±0.3; Net Weight 50g/1.8oz Function: Soldering electronic components. Anti-oxidation flux. Better welding fluidity. Easy to tin, easy to solder, strong welding. Feature: Non-toxic, no corrosion, high intensity joint, good immersion, good insulation, good soldering properties, smooth welding surface. Application: Soldering flux is suitable for welding on instruments, meters, gold, copper, iron, tin and other metals. Widely used in phone PCB, SMD, SMT patch and appliance repair. BOJACK 50g Solder Paste Weight: 50g Shell: tin box Material: rosin Feature: Non-toxic, no corrosion, high intensity joint, good immersion, good insulation, good soldering properties, smooth welding surface. Package List: 1 pcs Soldering Flux Paste 50g Application: Solder Paste cleans and prevents metal oxidation which allows solder to form strong, long lasting mechanical and electrical bonds. It also acts as a wetting agent, increasing the flow of solder and the efficiency of soldering process. Widely used in phone PCB, SMD, SMT patch and appliance repair. Instructions: Wipe the surface of the object before soldering, apply the paste on the copper, iron, tin and other metals to be soldered, and then use a soldering iron to melt the tin on the solder joint.