Can Guangdong save trouble to find Dalian's social security insurance certificate?

Yes, social security can cross provinces.

Social security is actually what we call social insurance and an important part of the social security system. Refers to an income and compensation system provided for loss of working ability, temporary loss of jobs or losses caused by health reasons.

Social insurance includes five specific items, namely, basic old-age insurance system, basic medical insurance system, industrial injury insurance system, industrial injury insurance system and maternity insurance system, which are collectively referred to as five insurances.