Copper foils; copper-base alloy; films and sheets made from metal for use in the manufacture of circuit boards; copper alloy foils; copper, unwrought or semi-wrought; unwrought or semi-wrought copper alloys; castings, foils, powder, and rolled, drawn or extruded semi-finished articles of copper or its alloys

'alloy':6,22,36,53 'articl':48 'base':5 'board':20 'cast':37 'circuit':19 'copper':1,4,21,24,35,50 'copper-bas':3 'drawn':42 'extrud':44 'film':7 'finish':47 'foil':2,23,38 'made':10 'manufactur':17 'metal':12 'powder':39 'roll':41 'semi':28,33,46 'semi-finish':45 'semi-wrought':27,32 'sheet':9 'unwrought':25,30 'use':14 'wrought':29,34

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