Sichuan Xinhua Winshare Chainstore Co, the first Chinese bookstore to sell shares overseas, raised an additional HK$187.7 million ($24 million) by partly exercising the over-allotment option of its Hong Kong initial public offering (IPO).

Xinhua Winshare, based in Chengdu, Southwest China's Sichuan Province, has sold 32.4 million shares at the IPO price of HK$5.80 apiece, according to a release to the Hong Kong Stock Exchange.

The operator of 191 shops selling books and audio-visual products in Sichuan and two outside the province raised HK$2.14 billion selling 369.4 million new shares last month, Bloomberg News reported.

The company can issue as many as 55.4 million more shares, or 15 percent of the original size of the offering, to help stabilize prices within 30 days of opening trade on the Hong Kong Stock Exchange, according to its prospectus.