"primary customer" — Kollokationen-Wörterbuch Englisch

primary customer Kollokation
Automatische Übersetzung (wir garantieren seine Korrektheit nicht): główny klient
  1. primary Adjektiv + customer Substantiv
    Schwache Kollokation

    Maybe they were the primary customers of the alleged nuclear plant, although I couldn't see how they'd need it.