$通信系统(JCS)$ 8-K - Current report Filed: 2019-09-20 AccNo: 0000897101-19-000833 Size: 33 KBItem 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain OfficersItem 9.01: Financial Statements and Exhibits 网页链接