Victory Giant Technology (Huizhou) Co is considering a listing in the Hong Kong Special Administrative Region that could raise about $1 billion, according to people familiar with the situation.

The maker of printed circuit boards is working with advisers on a potential second share sale that may take place as soon as this year, the people said, asking not to be identified because the information is private.

Considerations are preliminary and details such as the size and timing of an offering could change, the people added.

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Victory Giant Technology did not respond to requests for comment.

Founded in 2006, Victory Giant Technology has traded on the Shenzhen stock exchange for about a decade. Its shares are up 270 percent this year, giving the company a market capitalization of about 134 billion yuan ($19 billion).

Companies listed on Chinese mainland exchanges have been flocking to the HKSAR for fundraising, helping to drive a sixfold increase in share sales in the city in the first half of the year. With the nation's regulators signaling support for the moves, so-called A-H listings accounted for the majority of the HKSAR’s proceeds from first-time share sales in the six months through June.

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Victory Giant Technology’s first-quarter net income surged 339 percent from a year earlier to 921 million yuan, boosted by the artificial intelligence boom.