Civen RA Copper Foil is rolled from pure copper ingots, the process including purifying copper ores, make into copper cathodes, ingoting, rolling, annealing, washing, testing, slitting and packing. Our copper ores are imported from South America, which were famous for their copper mining.
110-anneal (Electrolytic Tough Pitch or ETP) dead soft. Min 99.99% CU.
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