ΠΟΡΤΑ ΑΣΦΑΛΕΙΑΣ
https://p4hedpc284.doodlekit.com/blog/entry/5169372/15-things-your-boss-wishes-you-knew-about-
It's been a long time because we went over security doors, so we thought it was due time for a refresher. Let's begin by advising ourselves what they are and why we need them. What is a security door, and why do