ΘΩΡΑΚΙΣΜΕΝΕΣ ΠΟΡΤΕΣ
http://b3.zcubes.com/v.aspx?mid=1227334&title=is-tech-making----better-or-worse
It's been quite a while given that we went over security doors, so we believed it was due time for a refresher. Let's start by advising ourselves what they are and why we require them. What is a security door,