General Administration of Customs of the People’s Republic of China, Regulation of the General Administration of Customs of the People’s Republic of China on Import and… (1986)
“ The diplomatic courier, when conveying a diplomatic bag, shall be provided with a courier certificate issued by the competent authorities of the sending state. The captain of a commercial aircraft may be entrusted with the task of conveying a diplomatic bag for the Mission, but he shall be provided with an official document of the consigner state (indicating the number of packages constituting the bag) . ”
