init stem OPT timeline四月

Timeline:
4/4: 向学院提交OPT签字申请表
4/6: 收到学院OPT已签字申请表
4/6: 向international center递交OPT I20申请
4/11: 拿到OPT I20
4/12: 寄出I20以及其他材料到USCIS
4/14: 材料到达CHICAGO
4/18: 收到Case has been accepted for processing邮件. 等快递的Online Access Code邮件
4/22 收到Online Access Code进入官网查询case:
April 14, 2022
Case Was Received And A Receipt Notice Was Sent
5/23: Card is being produced

（用来查询opt审理进度的网站：opttimeline.com）

补充内容 (2022-05-27 23:54 +8:00):
5/26: Card was produced

补充内容 (2022-05-28 13:08 +8:00):
5/27: Card Was Picked Up By The United States Postal Service

补充内容 (2022-06-01 12:37 +8:00):
5/31 拿到EAD ssn等所有文件（USPS邮递）