HIGH QUALITY:This soldering flux made of high purity rosin materials soldering flux lead-free, halogen free, non-corrosive, and with good flow ability. PRODUCT ADVANTAGES:Stable Performance And Low Volatility, less Smoke, environmental protection series. WIDELY APPLICABLE: The solder flux is suitable for welding instruments, gold, copper, tin, iron and other metals. Ideal for electronic welding, repair and rework. NON-CORROSIVE:The rosin soldering flux is not conductive in dry conditions and has good insulation. So it is not corrosive to metal substances such as circuit boards. EASY TO USE: The rosin soldering flux paste with pushing-type design, just gently push the push rod, the flux will slowly overflow, it is very convenient to use, it will smoother flowing no wasting during welding, after the use of the cover can be sealed. This soldering flux made of high purity rosin materials soldering flux lead-free, halogen free, non-corrosive, and with good flow ability.