This means that you'll be able to search for NAICS codes directly (if that's your jam). We'll do the math; let's make better data on public procurement together.
Only bulk material will be identified in this class. Primary Forms are raw unfinished ingots, pigs, that require refinement to be usable and are made of precious metals.
Possible NAICS Codes
423940 – Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
331491 – Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding
339910 – Jewelry and Silverware Manufacturing
331492 – Secondary Smelting, Refining, and Alloying of Nonferrous Metal (except Copper and Aluminum)
331410 – Nonferrous Metal (except Aluminum) Smelting and Refining
331529 – Other Nonferrous Metal Foundries (except Die-Casting)
541380 – Testing Laboratories