SHANGHAI, Dec 20 (Reuters) - China will launch interbank foreign exchange trading in currency pairs including the Chinese yuan versus the Macanese Pataca (MOP), the U.S. dollar versus the MOP and the Hong Kong dollar versus the MOP from Jan. 2, China FX trade system said in an online statement on Wednesday.

It added that spot trading of the yuan against the MOP will be allowed to fluctuate within a range of 3% above or below the daily yuan midpoint against the MOP. (Reporting by Beijing Newsroom; Editing by Andrew Heavens)