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Enameled precious metal is specially designed for China's aerospace industry with a wound potentiometers provide products with good corrosion resistance, oxidation resistance, contact resistance, low temperature coefficient of resistance, good Stability , it is a necessity for precision products. The types of precious metals: gold-based alloys, silver-based alloys, tungsten alloy of palladium, platinum and iridium alloy, pure platinum, silver and so on.