... :making filament,setting rod at H.T.etcType &Application TypeapplicationWAl1Applied for making filament,cathodes,setting rod at Ht,electrode,lead,support ... ,typing ,needle ,etc.W1/2/3/4Applied for making electrode,lead and heater componentsNote: Quality is strictly as ... ≥99.95%≤0.001%≤0.002%≤0.001%W1/2/3/4≥99.95%≤0.001%≤0.002%≤0.001%NOTE:K ...