LUOWEI LW-559 Lead-Free Zero Resistance Flux Paste 100g The LUOWEI LW-559 is a high-performance, lead-free flux paste specifically designed for precision soldering and BGA reballing. Its “Zero Resistance” marketing refers to its high Surface Insulation Resistance (SIR), which prevents parasitic electrical leakage on sensitive mobile phone and computer motherboards. Below are the full specifications for … Continue reading LUOWEI LW-559 Lead-Free Zero Resistance Flux Paste 100g