ΠΟΡΤΑ ΑΣΦΑΛΕΙΑΣ
http://emiliojaie017.withtank.com/how-technology-is-changing-how-we-treat-portes-asphaleias-skhedia/
It's been quite a while given that we went over security doors, so we believed it was high time for a refresher. Let's begin by reminding ourselves what they are and why we require them. What is a security door,