London trades standard 400-troy-ounce Good Delivery bars, but Asian retail and institutional buyers demand 1-kilogram (32.15 oz) and 100-gram 99.99% fine ingots. Swiss refineries bridge this multi-billion-dollar global supply chain.
1. The Swiss Refining Hub
Refineries like Valcambi, PAMP, Argor-Heraeus, and Metalor melt down London 400 oz bars and recast them into kilo bars stamped with 999.9 purity. Tracking Swiss export destinations provides transparent proof of eastern central bank and consumer accumulation.