$全美科技(USAT)$ 8-K - Current report Filed: 2019-02-06 AccNo: 0001140361-19-002609 Size: 36 KBItem 4.01: Changes in Registrant's Certifying AccountantItem 4.02: Non-Reliance on Previously Issued Financial Statements or a Related Audit Report or Completed Interim ReviewItem 9.01: Financial Statements and Exhibits 网页链接