I have cancelled the contract in the original unit of Sifang and got the relevant information, but I can't apply for insurance in the new unit of Laoshan?

If the insured leaves the place of employment and goes to other provinces and cities for employment, he shall, when leaving the original place of employment, issue a "Certificate of Insurance Payment" to the social security agency of the insured place. After being employed in a new place of employment and paying the insurance premium, you can apply to the social security agency of the new place of employment for renewal of the old-age insurance relationship with the insurance payment certificate issued by the original place of employment.

How to deal with individual accounts when migrant workers interrupt payment?

Migrant workers interrupt payment, by the original insured social security agencies to retain their basic old-age insurance relationship, save all their insurance payment records and personal accounts, personal account payment amount continues to bear interest according to the provisions. Migrant workers who return to urban employment and continue to pay insurance premiums, whether they return to their original insured places for employment or go to other cities and towns for employment, should calculate their payment years cumulatively and their personal account storage amount should be combined. If the accumulated payment period is over 15 years or more, they will enjoy the same basic old-age insurance benefits as urban workers after reaching the national statutory retirement age.