importierten
Importierten is a form related to the German verb importieren (to import). It occurs in two primary ways: as the simple past tense form for plural subjects (Präteritum), and as the declined past participle importiert used as an attributive adjective in plural noun phrases (after a definite article).
As a verb form, importierten is the Präteritum (simple past) for the plural subjects wir and sie.
As an attributive adjective, the past participle importiert can function as a modifier in plural noun phrases
Usage notes: Distinguish the two uses by context. The Präteritum form applies to the verb and speaks