BYD Electronic flat in HK IPO debut; Sinoma jumps

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HONG KONG, Dec 20 (Reuters) - Shares in Chinese handset component maker BYD Electronic (International) Co Ltd (0285.HK) were set to open flat in their market debut on Thursday after it raised US$758 million in a Hong Kong IPO, while cement engineering services firm Sinoma (1893.HK) jumped 38 percent.

Recent IPOs in Hong Kong have met with a rocky response from investors, with several posting disappointing first-day performances amid volatile markets due to worries about the U.S. economy and monetary tightening in China.

Shares in BYD Electronic, which is a spin-off from BYD Co (1211.HK), were indicated at HK$10.74 each in pre-market trade, compared with its IPO price of HK$10.75 per share, which was at the bottom of a range.

Shares in China National Materials Company Ltd (Sinoma), the world's largest cement engineering service provider, were indicated at HK$6.20 each in pre-market trade, compared with its IPO price of HK$4.50 per share. The company raised US$538 million in its IPO.

BYD Electronic and Sinoma were sponsored by UBS (UBSN.VX) (UBS.N), while BOC International also handled Sinoma's deal.

In another market debut, shares in Vietnam Manufacturing & Export Processing (Holdings) Ltd (0422.HK) were set at HK$3.40 each, down 9 percent from their IPO price of HK$3.75.

The company raised US$109 million in an IPO deal sponsored by BNP Paribas (BNPP.PA).

(US$1=HK$7.8)

(Reporting by Kennix Chim; Editing by Anne Marie Roantree)