BEIJING, Feb 6 (Reuters) - China state fund Central Huijin Investment said on Tuesday it has expanded its scope of investment in exchange-trade funds (ETFs), according to a statement on its website.

It will further increase investment in Chinese stock ETFs and is determined to safeguard the stable operation of China's capital markets, said the statement. (Reporting by Beijing newsroom, Jason Xue in Shanghai; Editing by Tom Hogue)