... Original white paste, Neutral acid-free solder paste to for BGA Specifications1, the help of welding ... , insulation is strong, welding surface smooth. Apply to cell phone, PC boards and other precision electronic ... we use pot boil water as truth, as long as the water not stem, pot won't ... Used in general instrument, copper, tin, iron to wait JinShuQi welding.Welding before wipe clean surface of article, ...