Detailed tariff information for Silver in semimanufactured form, containing by weight 87 to 89 percent of silver, 11 to 13 percent of tin and 0.1 to 0.7 percent of copper oxide, presented in the form of strip and certified by the importer as suitable for use in electrical contact systems intended for the manufacture of switches and relays (provided for in subheading 7106.92.50) imports
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