Can social security in different regions accumulate cumulative years?

1992 the length of service recorded in the archives before the implementation of the old-age insurance payment system (the actual payment period varies slightly from place to place) is generally regarded as the payment period according to the actual length of service. If this part is different from the actual length of service, you can check my file and communicate with the unit as soon as possible to correct it.

The actual payment period is that after the actual implementation of the old-age insurance payment system in various places, the actual payment is accumulated monthly, and the payment is accumulated for one month.

My pension insurance period (social security co-ordination period) is the sum of the deemed payment period and the actual payment period.

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