SEMICONDUCTOR
Where semiconductor assembly loses gold and palladium.
A lead frame strip, before it is trimmed into individual packages.
Assembly and test lines run lead frames and finished packages past you every day. The gold or palladium sits as a thin plated layer on the leads and bond pads, not as bulk metal, so it never looks like much on its own.
It gets missed because reject trays and package waste are usually priced as scrap copper, or binned outright, and nobody weighs the precious layer separately before that happens.
The first step is a tray. Send us your rejected lead frames or IC packages, we check them against our waste acceptance criteria, and you get a number back.