The Consortium was created in 1992 from leading specialists and managers of the company Control-Welding Appliances /KZU/, which was a high-tech enterprise in welding in the period 1966-1990. in the branch of building - Bulgaria.

It is an heir and user of the know-how, technologies and long-time experience in the field of erection and welding works, the fabrication and erection of unique structures.

The specialists in this company managed and executed the most responsible erection and welding activities, they fabricated and erected unique metal structures and installations at all the sites of the industrial development of Republic of Bulgaria during this period. Of utmost importance were the 6 blocks of the Nuclear Power Plant (AEC) at Kozloduy, the thermal power plants at Maritza Iztok, the hydro power installations including the PAVEZ Chaira, the Petrochemical Refinery - Burgas, the chemical plants at Devnia, the metallurgical plant at Kremikovtzi, the Cement plants, the Heavy Machineware Plant (ZTM) at Radomir, many facilities of the food industry and others.