What is the social security number of Hunan tax?

The social security registration certificate number is a seven-digit code given to the company by the Social Security Bureau, which is a series of numbers that can be taken from the lobby of the Social Security Bureau. Social security number is the national unified individual social security number. Personal social security number is a citizen's identity number. The employing unit shall, within 30 days from the date of employment, apply to the social insurance agency for social insurance registration for its employees. If the social insurance has not been registered, the social insurance agency shall verify the social insurance premium it should pay.