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When an individual is born, they receive a birth certificate and, later, an Aadhaar or PAN card that establishes their identity. Similarly, when a company is incorporated in India, it is assigned a unique identity by the government. This identity is known as the Company Registration Number, more commonly referred to as the Corporate Identification Number (CIN), Company Registration Number: The Identity Card of Companies. Just as no two people can have the same Aadhaar number, no two companies can share the same CIN. It is the official “identity card” of companies, ensuring that every business can be recognized and verified.