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Machine building in Bulgaria. TANGRA is expanding on new markets.” Interview for Capital newspaper with Dipl. Eng. July Armianov, owner of TANGRA and member of the board of Bulgarian Chamber of Machine Building

Paris, 1998. International Exhibition on Heating, Ventilation and Air-Conditioning. “An exhibitor at the stall of a Belgian company noticed my interest and asked: “Sir, do you know...

„TANGRA” celebrates its 25th anniversary

On August 17th, 2014, “TANGRA” celebrated 25 years from its founding. The company is specialized in the designing, construction, production, installation and servicing of ventilati...

“Energy efficiency in ventilation, air conditioning and heating systems” – an interview with Eng. July Armianov (interview for newspaper “Stroitelstvo Gradat”)

The rumors for energy efficiency in the systems for ventilation, heating and air conditioning started after the energy crises from 1973. Since that time, the interest in heat recov...
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