… Platinum, unwrought or in semi-manufactured forms, or in powder form. …
Explanatory notes
… aqua regia. It can be fabricated into bars, sheets, strip, tubes, wire and other semi-manufactured forms by forging, … combustion aero-engines and for ignition devices in gas-turbine aero-engines. Platinum and its alloys also … as an alloying addition to platinum, palladium, molybdenum, tungsten, etc. (e.g., for the manufacture of pen-nib points …