| Precious Metal: ISO 4217, Metal, Aluminium, Bismuth, Tellurium, Platinum, Rhodium, Gold, Silver, Noble Metal, Gold as an Investment, Silver as an Investment Год: 2010
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| Passivation: Passivation, Hydrogen Peroxide, Aluminium, Purified Water, Redox, Sodium Hydroxide, Citric Acid, Corrosion, Nitride, PH, Alkali Год: 2010
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