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Companies get listed on stock exchanges in order to raise funds and for liquidity of their shares and bonds. They can get listed through the process known as Initial Public Offer (IPO). Listing requirements is the set of rules established by stock exchange for firm listed on it.
It is different for different stock exchanges and is summarized in Listing Agreement of the exchange. NSE and BSE IPO requirements include that minimum paid-up capital of the company should be Rs 10 crores.