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In order to maintain its role as a market leader, NIS places great emphasis on the quality control of all its products.
Quality control is conducted at all key points in the supply chain, from the inspection of raw materials at the oil field, to final consumers at refuelling station locations.
The quality control takes place at 5 points:
Through this complex process, we ensure the highest standard for every product we deliver to each customer – both in wholesale and through our retail network.
Aviation fuel JET A1 is controlled according to a special protocol, by inspecting all characteristics in accordance with the fuel quality standard – Defence Standard 91-091.
Quality control of bitumen (road and polymer – modified) is carried out according to an adopted protocol and the specification for Euro bitumen for roads, which is developed in accordance with the SRPS EN 12591 standard, and the specification for polymer – modified bitumen, which has been developed in accordance with the EN 14023 standard.
Raising the satisfaction of consumers to the highest possible level is one of NIS’s priorities. In order to analyse and monitor consumer satisfaction, various types of customer satisfaction surveys are being conducted within the company.