Although Baidu is the dominant search engine in China, Google does have significant traffic. How significant depends on the specific keyword.
Many people in China who look for B2B products or services use Google. Customer to Business searches however are dominated by Baidu. If you are searching for an MP3 download, Baidu is where most people search.
Baidu will probably have more expensive ad costs for you but will bring in more traffic. In many cases their entire first page is paid ads so organic search traffic is more challenging.
Most B2B companies should work with both search engines in order to maximize profits.