[ Pure silicon sold in ingots, pure silicon sold in blocks ]

'block':10 'ingot':5 'pure':1,6 'silicon':2,7 'sold':3,8

Photovoltaic solar modules, solar cells, solar modules, silicon chips, silicon wafers, multi-crystalline photovoltaic cells

'cell':5,16 'chip':9 'crystallin':14 'modul':3,7 'multi':13 'multi-crystallin':12 'photovolta':1,15 'silicon':8,10 'solar':2,4,6 'wafer':11

Solar collectors for generating energy, in particular electricity

'collector':2 'electr':8 'energi':5 'generat':4 'particular':7 'solar':1

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