Prompt
Help us work on customer concentration according to the goals and materials below. [input] Goals and usage situations: You want to resolve any blockages in customer focus and determine your next course of action. Resources to review: Sales disclosure data by customer Conditions and Constraints: Please proceed based on the provided data, and mark any missing facts as requiring confirmation. Previous attempts and records: This is my first attempt. Please proceed from the parts that can be confirmed in the current data. [Key points to check in this topic] Check the proportion of major customers, contract characteristics, and possibility of substitution. [Results to be created this time] First organize the necessary input values, sources, units, and calculation formulas, and then calculate only the confirmed values. If no value is provided, indicate the required input. Explain errors due to rounding and assumptions and check the results. [Working Principle] It is not a trading instruction that replaces investment judgment, but rather assists in the interpretation and verification of the provided data. Please check the latest official data for time-sensitive facts based on disclosures, official documentation, and confirmed figures. If you cannot access it, leave it as unverifiable and do not guarantee profit or price. If there is no input that will change the results, ask only the necessary questions first and proceed with the parts that can be confirmed with data. [Completion criteria] Distinguish between original figures and calculated values and check if they can be verified in another way. Distinguish between the basis for the outcome, remaining uncertainties, and next actions, and mark only what has actually been confirmed as complete.