Withdrawing the Social Security retirement fund in Tianjin is a personal business, while the employer shall provide relevant paperwork to the employee, it does not have the obligation to process it on employees' behalf.
Work permit cancellation: 外国人来华工作许可注销证明.
Work permit copy.
Social security card (need to be activated for more than 6 months).
Valid resident permit.
Visit your work unit social security bureau and ask for:
-Confirmation Letter for Whole Withdrawal of Basic Pension Insurance Deposit 一次性提取基本养老金确认书
-Application Letter of Withdrawal of the Personal Pension for Foreign Insured Persons 外国(港澳台)参保人员基本养老保险个人账户储存额一次性支取申领表 ( to be stamped by your employer ).
In Tianjin, the funds will arrive between 3 and 9 months to your bank account.
In some cities the funds are sent to the employer directly, who will have to send them to you.