Please be advised CZ is now bidding for our line maintenance business at KNO. per our company procedure.1、Project Profile1.1 Subject: CZ bidding invitation for line maintenance at KNO1.2 ITEM No.： CZ2026003386       1.3 Item Category：line maintenance service1.4 item description：full details are given in Appendix1.5 Service location：KNO1.6 Contract period：3years       2、Supplier qualification requirements2.1 full details are given in Appendix(Service Requirement at KNO)3、Supplier registration3.1The announcement time：We would like to request you to submit your competitive proposal along with your authority certificate, company brief, tool & Equipment list, manpower, etc. to our group mailbox (tangjiangliang@、huyichun@、ouyangting@) before 24th AUG 2026.4、Prequalification 4.1 We will open the bidding document and will inform you the bidding result around 31st OCT 2026 .5、contact information5.1 Purchaser：China Southern Airlines Company Limited       Maintenance & Engineering Division      Zip Code：510470        Contact person and phone number：Mr Tang /+86-20-86138451        EMAIL：tangjiangliang@、huyichun@、ouyangting@