This is the 9197th most frequent Korean word.
건설사들이
"Construction companies."
Here, "건설사들이" refers to "construction companies" taking an active role in preparing design documents.
건설사들이 다양한 설계 도면을 준비하고 있습니다.
Construction companies are preparing various design drawings.
Here, "건설사들이" signifies the construction companies involved in a specific project.
그 건설사들이 참여한 프로젝트가 이번에 수상했습니다.
The project in which those construction companies participated has won an award this time.
In this instance, "건설사들이" denotes the companies' key role in urban projects and indicates their ongoing actions.