$Technical通信(TCCO)$ 8-K - Current report Filed: 2019-05-16 AccNo: 0001171843-19-003392 Size: 17 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