The purpose of this university specialist thesis is to present the building-up of a company's competitive advantage using the strategy of cost leadership in the foreign market, its sustainability, advantages and risks of application. The strategy is presented on the example of the company RASCO d.o.o., a manufacturer of professional utility equipment for the maintenance of traffic infrastructure, an analysis of the professional utility equipment production industry and the state of the company on the relevant foreign market. The main goal of this paper is research and analysis of the way in which the chosen company implements the strategy of cost leadership in the relevant foreign market and how it adapts to the competitive dynamics in the industry of the production of professional utility equipment. The methods of analysis and synthesis, descriptive methods and comparative methods were the most frequently used methods for the preparation of this paper. According to the analysis of the professional utility equipment production industry, and considering all its specificities, the conclusion is that professional utility equipment is a subject to numerous frequent changes depending on changes in trends in individual markets. The business strategy of the RASCO company is, according to current analyzes and indicators, effective because the company continuously adapts to all changes on the market and within the industry. The company bases its business strategy on many sales points, that is, the markets where it places its products. Depending on the market situation and the state of the industry in a certain market, it adjusts the business strategy by focusing on key factors that influence the effectiveness and sustainability of the strategy. On the foreign market in question, and according to the first assessments and analyses, it is already visible that the level of business has been raised to a much higher level by applying the cost leadership strategy. All redesigned or newly introduced processes will lead to greater success of the company's operations, both on the foreign market in question and for the entire business.