Complex sentence: The company is a privately held company with branch offices in Shanghai, Guangzhou, Chengdu and Wuhan and has a coverage of the major usb token and software protection dongle market on the China mainland.
Split into simpler sentences: The company is a privately held company with branch offices in Shanghai, Guangzhou, Chengdu and Wuhan. And it has a coverage of the major usb token and software protection dongle market in China mainland.