he have t submit the following documents:
1.Valid & original passport with at least one blank visa page and valid for at least 6 months beyond the date of application
2.One complete filled out Visa Application Form with one passport photo (only color photo with light background like light blue and white is acceptable). US passport holder needs two photos and two Application Forms.
3.An invitation letter from the host company or the partner in China, or a letter from your company(Original letter, copy or fax are all acceptable).
4. round-way air ticket and hotel reservation.
It usually takes 4 working dyas to issue a visa.