How does the social security department write?

According to the national system, the country has Ministry of Human Resources and Social Security, and the social insurance work is managed by Ministry of Human Resources and Social Security. All provinces and cities have human resources and social security departments, and social insurance management offices (bureaus) are subordinate to them.

Therefore, the Human Resources and Social Security Bureau is the competent department of the Social Security Bureau and belongs to the Human Resources and Social Security Bureau.

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.