My former company gave me Shenzhen social security, and now my company gives me Beijing social security. Can I merge?

According to the Notice of the Ministry of Finance on Forwarding the Interim Measures for the Transfer and Continuation of the Basic Old-age Insurance for Urban Enterprise Employees in Ministry of Human Resources and Social Security (No.66 [2009] of the State Council)

Article 8 If the insured person is employed in inter-provincial flow, the basic old-age insurance relationship shall be transferred in accordance with the following procedures:

(a) the insured in the new employment in accordance with the provisions of the establishment of the basic old-age insurance relationship and payment, by the employer or the insured to the new insured social security agencies put forward a written application for the transfer of the basic old-age insurance relationship.

(2) The social security agency of the newly insured place shall, within 15 working days, review the application for transfer and continuation, send an acceptance letter to the social security agency where the insured person's original basic old-age insurance relationship is located, and provide relevant information; Do not meet the transfer conditions, make a written explanation to the applicant or the insured.

(3) The social security agency where the original basic old-age insurance relationship is located shall handle all the transfer and connection procedures within 15 working days after receiving the acceptance letter.

(4) After receiving the basic old-age insurance relationship and funds transferred by the social security agency where the insured person's original basic old-age insurance relationship is located, the social security agency in the newly insured place shall complete the relevant procedures within 15 working days, and notify the employer or the insured person of the confirmation in time.