... tin welding bar for PCB board1:good humidity,bright beautiful,fast 2:and high isolation resist Shenzhen Jufeng Solder Co.,Ltd ... .Waving soldering wire:Good humidity, bright soldering point, beautiful, fast, no halogen, no ion pollution, high isolation resistance after ... with deionisation liquid or distilled water (40-60).2: ultrasonic cleaning, fast and good effect if cleaning PCB soldering side on ...