China's economic growth is expected to further slide from a 13-year low as credit tightening policies and overcapacity continue to weigh on the world's second-largest economy.

GDP growth is estimated at 7.5 percent in the second quarter, from 7.7 percent for the January-March period, according to a forecast by analysts.

An economic slowdown may prompt the government to roll out more reforms after the Chinese economy last year expanded at the slowest pace since the Asian financial crisis in 1997.