A branch of Commerzbank in Frankfurt, Germany. In 2010, the lender worked on six M&A transactions between Chinese and German companies. Hannelore Foerster/Bloomberg

SHANGHAI - Commerzbank AG, Germany's second-biggest bank by assets, said its investment banking business in China will focus mainly on advising and financing Chinese companies' accelerating merger-and-acquisition (M&A) activities in Germany.

Philipp Mohr, Commerzbank's global head for M&A advisories, told China Daily on Wednesday that M&A service is one of the core strengths of the bank's investment banking business in China and that it hopes to increase its involvement in the country's growing investments in Germany.