Certificate from the Chamber of Construction in Bulgaria
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