$离子地球物理(IO)$ 8-K - Current report: i Filed: 2017-07-21 AccNo: 0000866609-17-000014 Size: 43 KBItem 3.01: Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of ListingItem 8.01: Other EventsItem 9.01: Financial Statements and Exhibits 网页链接