The professioanl relations of the company with the clients is highly appreciated from world leading companies like OMV and SHELL GAS. These multinational companies have chosen exactly KALVACHA SERVISE JSC for repair and monthly preventive maintenance of their gas equipment. Our key clients are companies like PETROL JSC, ECOPETROLEUM JSC LTD. for a guarantee period and out of guarantee period maintenance, as well as other private companies.