This report provides a comprehensive analysis of cross-cultural management based on a provided case study. It begins by discussing Trompenaars' seven dimensions of culture (universalism vs. particularism, individualism vs. communitarianism, specific vs. diffuse, neutral vs. affective, achievement vs. ascription, sequential time vs. synchronous time, and internal direction vs. external direction) and their impact on organizational contexts. The report then analyzes the behaviors of Wilhelm and Mr. Haider using these dimensions, highlighting their differing cultural orientations. It identifies the main cross-cultural management issues faced by Wilhelm's business, including differences in punctuality, the involvement of family members in business meetings, and economic concerns related to bank guarantees. Furthermore, it examines how cultural value orientations, such as individuality, collectivism, lifestyle, and behavior, affect management issues. The report recommends the RADPAC model of negotiation (Rapport, Analysis, Debate, Propose, Agreement, and Close) to improve cross-cultural management, emphasizing the importance of understanding ethnic values, addressing punctuality differences, and ensuring confidentiality in negotiations. The analysis concludes by stressing the significance of cultural awareness and adaptation in international business contexts.