The information required to be indicated on the envelope of the address of the bidder's standard document: Name of the bidder: (Project name) The bidding document shall not be opened before the year, month and day. If it is required to indicate "unsealed when opening bids" on the cover of the tender, it should also be indicated on the envelope and stamped with the official seal and legal person seal.
International bidding documents and tenders are divided into domestic version and English version according to international practice, and the English version shall prevail.
Domestic bidding documents are generally subject to the Chinese version. However, domestic enterprises usually bid in English (or local language) in international bidding. It is generally stated in the tender documents that if there is any discrepancy between the Chinese and English versions, the Chinese version shall prevail.