* HSBC's Shanghai IPO depends on regulatory requirements

* Targets 20 pct boost to China branch network in 2010

* Asia M&A to focus on China, emerging markets (Adds comments, details)

By Faith Hung and Joseph Chaney

TAIPEI, Nov 2 (Reuters) - HSBC Holdings (0005.HK: Quote, Profile, Research) (HSBA.L: Quote, Profile, Research) is preparing to boost its China presence about 20 percent next year, as it ramps up for an IPO in one of its fastest growing markets, a top company executive said.

Europe's biggest bank aims to open 15-20 new branches in China next year pending regulatory approval, up from the 90-100 it will have at the end of this year, Sandy Flockhart, Asia chief executive said in Taipei on Monday.

"We will be the largest international bank in China," Flockhart told reporters, following the bank's first board meeting in Taipei. "We will continue to invest in China in 2010."

HSBC has been among the most active foreign banks in China, where it earned a pre-tax profit of $752 million in the first half of the year, accounting for about 15 percent of the company's total. It competes there with the likes of Citigroup (C.N: Quote, Profile, Research) and Standard Chartered (STAN.L: Quote, Profile, Research) (2888.HK: Quote, Profile, Research).

In addition to its own branch network, HSBC's China investments also include a 19 percent stake in Bank of Communications (601328.SS: Quote, Profile, Research) (2328.HK: Quote, Profile, Research), a 16.8 percent stake in Ping An Insurance (601318.SS: Quote, Profile, Research) (2318.HK: Quote, Profile, Research), and a 12 percent stake in Industrial Bank (601166.SS: Quote, Profile, Research).