Konstantin Vasilev Nenov

Kaolin AD produces, mines and trades kaolin, silica sand, chamotte and carbonate fillers. It also offers feldspar, dolomite, and limestone. The company was founded in 1924 and is headquartered in Senovo, Bulgaria.

Alfa Finance Holdings AD operates as an investment holding company. Its businesses include financial services, real estate, and clean energy. The company was founded by Ivo Prokopiev, Konstantin Vasilev Nenov and Ivan Nenkov in 1999 and is headquartered in Sofia, Bulgaria.

Solarpro Holding AD engages in the photovoltaic power and renewable energy business sector. Through its subsidiaries, it involves in the production of equipment and parts for the production of solar panels, development, engineering, procurement and construction of PV solar plants, project management, power plant hardware, and components supply. The company was founded on December 17, 2009 and is headquartered in Sofia, Bulgaria.

Part of Groupe Bruxelles Lambert SA, Bentonit AD is a Bulgarian company that mines, processes, and markets zeolite, bentonite, and perlite. The company is based in Kardjali, Bulgaria. Bentonit was acquired by Imerys Industrial Minerals Greece SA on October 31, 2003.

Alfa Energy Kardzhali AD provides solar project development services. The private company is based in Sofia, Bulgaria. Alfa Energy Kardzhali was acquired by Alfa Energy Kardzhali Ad /Private Group/ from Solarpro Holding AD.