Certificate № І-TV 029115 by the CHAMBER OF BUILDERS IN BULGARIA, certifying that the builder is registered in the Central Professional Register of Constructors for construction works with the scope described in the certificate
Certificate of registration №235 from the STATE AGENCY FOR METROLOGICAL AND TECHNICAL SUPERVISION for maintenance, repairs and reconstruction of: 1.Compressor stations, gas pipelines and deviations from them, gas regulators and gas metering stations; 2. Pressure vessels with operating pressure up to 4,0MPa; 3.Pipelines for the transport of steam with a working pressure in excess of 0,6MPa and hot water above 110 ° C
Certificate of registration №125 of the STATE AGENCY FOR METROLOGICAL AND TECHNICAL SUPERVISION for a maintenance and repair of bridge and gantry cranes and the railways to them, electric hoists and load handlers and devices