Can a company not buy social security?

No. Through China's labor law, social security is every company must pay for the employees of a kind of insurance, for the company to buy social security for the individual or their own are necessary and have to protect the significance of the employer and the workers need to participate in the social insurance payment in accordance with the law, to participate in the social insurance has a mandatory, the company and the workers must be fulfilled. Social security refers to social insurance, social insurance (Social Insurance) refers to a kind of social and economic system for the loss of labor capacity, temporary loss of labor positions or loss of population due to health reasons to provide income or compensation.