ΠΟΡΤΕΣ ΑΣΦΑΛΕΙΑΣ
http://q3pcjsc070.nation2.com/the-most-influential-people-in-the-920937929913922921931924917925917931-928927
It's been a long time considering that we went over security doors, so we thought it was due time for a refresher. Let's start by reminding ourselves what they are and why we require them. What is a security door,