Many of the world's most renowned and highest quality gold bars are manufactured in Switzerland. Switzerland is the headquarters to four main refineries that are responsible for manufacturing and distributing retail gold bars. These are Argor-Heraeus, Metalor, PAMP and Valcambi. All gold bars manufactured in Switzerland are minted with a minimum fineness of 99.99%, and meet all of the Swiss National Bank's standards for investment grade gold. All gold bars manufactured in Switzerland are also recognised by the London Bullion Market Association (LBMA) and the COMEX in the United States. Swiss gold bars are recognised worldwide. They are available in a range of sizes from 1 gram to 1 kilogram, including 1 and 10 ounce bullion bar sizes.