You'll be able to see their introduction and other information once they have accepted your connection request.
技術書典5(個人誌): https://techbookfest.org/event/tbf05/circle/49010002 技術書典5(会社サークル誌): https://techbookfest.org/event/tbf05/circle/55010005 技術書典7(会社サークル誌): https://techbookfest.org/event/tbf07/circle/5165455622799360