good question...
Here are our 2 selections
Law services
http://www.generallaw.us/law/marketing-law-of-in-china.html
Finance in China
For many years, China’s major financial markets have been largely closed to foreign financial institutions (FIs), but this appears to be changing as global relations change and the growing middle class The demands further strengthen its globalization agenda. Since the authorities are taking real steps to open up the country’s financial sector to attract foreign investment and expand the financial system, the inland areas should be given a quick start, but strategically, if they I want to take advantage of opportunities to participate.
http://www.financedata.org/finance/opportunities-in-chinas-financial-markets.html
tech in China
To enter the market and enter , A strong presence in first and second tier cities is essential. However, as Internet use is saturated in first-tier cities, brands may begin to reach consumers in third- and fourth-tier cities as well.
According to Morgan Stanley, small towns could be a major driver of growth and consumer spending in the coming decade. Lower cities will be bigger, richer and more eager to spend.
http://www.fronttech.org/mobile/the-market-for-techno-brands-in-china.html