Can Suzhou Sulun Textile Factory pay back the old-age insurance for retired workers?

Of course. According to the inquiry of official website of Suzhou Human Resources and Social Security Bureau, since the implementation of social pooling of basic old-age insurance for enterprise employees including retirement fees in Suzhou on March 2, 2023, all kinds of enterprises and their employees who should be insured according to regulations, individual industrial and commercial households and their employees who are insured according to the unit model can pay their unpaid basic old-age insurance premiums according to regulations. So, you can make up.