Little bit out of scope. Title says its own.
I just like the pics below. Enjoy 🙂
Source: https://businessfinancing.co.uk/the-oldest-company-in-almost-every-country/
Many of them have relations to Ex in many ways.
Keep up good work!
Arpad
veress@exprofessional.com
exprofessional.com
Ex inspection is a must have on site in a possible hazardous
The explosion-proof products, equipment installed elsewhere in the explosion protection zone, and
Keep up good work. Arpadexprofessional.com
All service providers shall be with Ex personnel competency we used to
arpadveress 
