UPDATE 1-Deals of the day -- mergers and acquisitions

(Adds Sony, BlackRock, Flander, SandRidge Energy)

Sept 23 (Reuters) - The following bids, mergers, acquisitions and disposals involving European, U.S. and Asian companies were reported by 0900 GMT on Wednesday.

(For Reuters columns on deals, double-click [DEALTALK/] )

** POSCO and South Korea's chemicals-to-brokerage group Hanwha are studying a potential bid for Daewoo International, sources close to the companies told Reuters.

To read more, double-click [ID:nSEO113034]

** Japanese electronics giant Sony Corp (6758.T) won European Union regulatory approval to acquire part of Seiko Epson Corp's (6724.T) small and medium-sized LCD business. [ID:nBRQ007528]

** China's Geely Automobile Holdings, whose parent has been linked with both Volvo and Opel, said it would raise HK$2.59 billion ($334 million) by issuing convertible bonds and warrants to an affiliate of Goldman Sachs, sending its shares up by a quarter. [ID:nHKG311594]

** Genetic-testing specialist Qiagen is buying its British peer DxS Ltd to expand its cancer diagnostics business and will raise its capital to fund the deal and possibly further takeovers.[ID:nN22368566]

** U.S. fund manager BlackRock (BLK.N) gained European Union regulatory approval on for its acquisition of a Barclays (BARC.L) investment unit for $13.5 billion in cash and shares. [ID:nBRQ007527]

** Privately-held Finnish mobile software firm Flander said it has agreed to buy China's Symbio expanding its offering and creating one of the largest outsourced product development firms in the world. [ID:nLM385787

** U.S. oil and gas exploration and production firm SandRidge Energy Inc (SD.N) has struck a deal to buy bankrupt rival, Crusader Energy Group, for $230 million, in a cash and stock deal that would give it additional acreage in the Anadarko and Permian basins. [ID:nSP466456] (Compiled by Tina Kwan in Singapore and Divya Sharma in Bangalore)