Air China Contact number New Zealand關於「Air China flight cancellation certificate」標籤，搜尋引擎有相關的訊息討論：
Flight delay certification self-service - Air Chinawww.airchina.com.cn › service › flight-delayDelay/Cancellation Certificate - Air Chinam.airchina.com.cn › invoke › cancelCertificate@pgFlight delay or cancellation certificates - Air China Limitedwav.ca.amadeus.com › delay-canc