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Isitampu pad/i-inki eyomileyo ekhawulezayo/i-inki ekhethekileyo
Ukhethekileyo kwimveliso yesitampu sesitampu, i-inki yokuzalisa, i-inki ye-flash, i-inki ekhethekileyo, njenge-inki yokuchasana ne-counterfeiting, i-inki ye-fluorescent, i-inki yempahla.