A China travel visa in a valid passport is required documents for entering into the mainland. You must make sure that your passport has 6 months+ validity. If you arrive without a valid travel visa, you will not be allowed to enter, may be fined and will be immediately deported at your own expense. In fact, without a proper visa, the airline will most likely not allow you to board. Applicants are required to appear in the visa office to apply. If you cannot apply in person, you can send a relative, friend, or travel/visa agent to come and submit the application on your behalf. The Chinese Embassy and Consulates do not accept visa applications by mail. Another option is to contract a private travel document expediter. Expediting services are usually located in major cities where embassies and consulates are found.
Detailed visa invitation letter instructions will be available when registering for this event. Questions can also be sent to stg_conferences@be.ibm.com