MICHAEL M. TSONTOS S.A., since October 11th of 2010, has an upgrated Construction Degree according to the following table.
- CONSTRUCTION'S CATEGORIES CLASS-REGISTER OF CONTRACTORS
- ROADS 4th
- BUILDINGS 4th
- PLUMBINGS 4th
- PORTS 4th
- ELECTROMECHANICALS 4th
- INDUSTRIAL - ENERGY 4th
- CLEANING & PROCESSING PROJECTS
WATER & LIQUIDS, SOLIDS & GASES 3rd