SHANGHAI, June 19 (Reuters) - China will stick to a supportive monetary policy stance, while conditions for the central bank to start trading in the secondary bond market has become gradually ripe, the head of its central bank said on Wednesday.

China will flexibly use various monetary policy tools including interest rates and reserve requirement ratios, People's Bank of China (PBOC) Governor Pan Gongsheng told the Lujiazui Forum in Shanghai.

He added that China will resolutely prevent exchange rate overshooting.

(Reporting by Shanghai Newsroom; Editing by Christian Schmollinger)