As of July 31 this year, 547 Chinese mainland companies were listed on the Hong Kong bourse, said Stephen Lam Sui-lung, Secretary for Constitutional and Mainland Affairs of Hong Kong Special Administrative Region government on Saturday.

The companies had raised a total of 2.7 trillion Hong Kong dollars (349.8 billion U.S. dollars) through their listings until the end of July, he said.

Lam made statements at the ongoing sixth Pan-Pearl River Delta (PPRD) Regional Cooperation and Development Forum in Fuzhou, capital of southeast China's Fujian Province, which runs from Aug. 27 to 31.

The forum, started in 2004, aims to stimulate the economy in the region, which covers the provinces of Hainan, Yunnan, Hunan, Guangdong, Jiangxi, Fujian, Sichuan, Guizhou, as well as Guangxi Zhuang Autonomous Region. Hong Kong and Macao special administrative regions are also included.

A total of 152 enterprises from the Pan-Pearl River Delta region were listed on the Hong Kong bourse at the end of July this year, up from 71 companies in 2004 when the first forum opened, he said.