We define financial statements as business documents that every entrepreneur is obliged to keep according to the Accounting Act. By keeping financial reports, persons and organizations inside and outside the company collect data on business results and the condition of the assets of the observed company. Also, the data obtained through financial statements must be realistic and objective, and available to users. The accuracy and objectivity of the data obtained from the financial statements is important to a larger number of users due to business decisions. Within this paper, the business of AD Plastik d.d., which can be said to be the largest manufacturer of plastic parts and accessories for motor vehicles in the automotive industry, and the production of plastic products from the territory of the Republic of Croatia will be observed. They build their business success by introducing innovative and creative solutions, and following the company's vision of becoming a market leader in Eastern Europe. Also, a picture of the business of AD Plastik d.d. for 2018, 2019 and 2020, which is a fundamental part of the research of this paper. The presentation of operations will be performed through financial indicators of operations for each observed year. Considering the observed years, and the occurrence of the crisis caused by the corona virus that took place in the observed 2020, we can see that the company did not have too significant changes, it did not have any significant decline. Also, a very important thing is that the company does most of its work through exports, and has gone through the most difficult moments that the economy has experienced and no significant changes are visible that would jeopardize the company's business.