SYDNEY, July 10 Reuters Two Chinese companies sunk by 15 in their Hong Kong initial public offerings IPO debuts on Wednesday, while a small Chinese petroleum refiner soared nearly 30 as sentiment towards new share sales in the city remains volatile.

Chenqi Technology opened down 14.3 and Shanghai Voicecomm sunk 15.4 in early trade on Wednesday.

Ruichang International, which raised just HK131.1 million 16.78 million, found support, though, with its shares trading as high as HK1.35 each compared to HK1.05 in the IPO.

The Hang Seng Index was up 1.3 and tech index rose 2.1 on Tuesday.

Chenqi raised HK1.01 billion 129 million and Shanghai Voicecomm raised HK664.02 million 85.0 million, according to their respective regulatory filings.

1 7.8116 Hong Kong dollars

Reporting by Scott Murdoch in Sydney and Donny Kwok in Hong Kong; Editing by Tom Hogue

Source Reuters