$IPG光电(IPGP)$ 8-K - Current report Filed: 2018-10-30 AccNo: 0001111928-18-000124 Size: 575 KBItem 2.02: Results of Operations and Financial ConditionItem 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of C 网页链接