had been printing
-había estado imprimiendo
Past perfect progressiveconjugation ofprint.There are other translations for this conjugation.

print

Prior to its QuadTech purchase, CLP had been printing white to provide a target to help other inspection systems function on these very common substrates.
Antes de la adquisición de su QuadTech, CLP estuvo imprimiendo blanco para proporcionar un objetivo y ayudar a otros sistemas de inspección a funcionar con estos sustratos muy comunes.
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