Business English Writing,By Chen Xidong,BUSINESS ENGLISH WRITING 商务英语写作,Unit 1 Notes & NoticesLesson 1 NotesLesson 2 Notices Unit 2 Social CorrespondenceLesson 3 Introduction to LettersLesson 4 Letters of InvitationLesson 5 Letters of ThanksLesson 6 Letters of CongratulationsLesson 7 Letters of IntroductionLesson 8 Letters of ComplaintLesson 9 Letters of ApologyLesson 10 Letters of Sympathy,
