1. The original refers to the original copy of the bidding document, so it needs to be signed and stamped! There is only one original copy, and the cover of the original copy should be clearly marked "Original". \x0d\\x0d\2. The copy is usually a copy of the original, so there is no signature or seal! There are usually more than 3 copies, and \x0d\ the word "Copy" should be clearly marked on the cover of the copy. \x0d\\x0d\Note: When the copy and the original are inconsistent, the original shall prevail.