... bright soldering point, beautiful, fast, no halogen, no ion pollution, high isolation resistance after cleaning, easily cleaning, environmental friendlyItemIndexItemIndexSoldering %2.0 ... .2Cleaning after solderingqualifiedHalogen %0Isolation resistance after cleaning Ω>1×10Extension rate %>86PHneutralAcid KOHmg/g<35Bronze mirror erosion after cleaningqualifiedCleaning methods1: spraying brush, clean ...