This is taught by Schematic: Chief Engineer Jard's Journal , which is dropped by regular Pandaria NPCs.
Using a gift wrapper, such as Red Ribboned Wrapping Paper, on this item will cause a bug that prevents the player from being able to sell it on the Auction House. If you have already done so, you will need to post a ticket to have Blizzard replace this item with a new one. (Source)
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