How many people can individual industrial and commercial households buy social security for?

Legal analysis: the law does not clearly stipulate the limited number of self-employed people to purchase social security. In principle, enterprises or self-employed individuals are obliged to pay social security for all employees.

Legal basis: The Social Insurance Law stipulates that self-employed individuals can also pay social security, and self-employed individuals can also get social security. However, because the self-employed are different from most employees, most of them have no fixed units, so they can't buy complete social security like employees, and the purchase methods are different.