[Ask ] What is the tense of this sentence?

看板EngTalk (全英文聊天)作者 (max)時間5年前 (2019/08/02 16:29), 5年前編輯推噓1(100)
留言1則, 1人參與, 5年前最新討論串1/1
=== It has been a pleasure doing business with you.=== Is this sentence a "Present perfect continuous tense"? Why not is "Present perfect tense"? If this is, Why could use this sentence on this occasion? Thanks -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 114.36.10.185 (臺灣) ※ 文章網址: https://www.ptt.cc/bbs/EngTalk/M.1564734578.A.CE0.html ※ 編輯: maxqq (114.36.10.185 臺灣), 08/02/2019 16:33:39 ※ 編輯: maxqq (114.36.10.185 臺灣), 08/02/2019 16:34:22

08/04 11:45, 5年前 , 1F
have p.p. +being= present continue perfect tense
08/04 11:45, 1F
文章代碼(AID): #1TG_HopW (EngTalk)
文章代碼(AID): #1TG_HopW (EngTalk)