Chinese Business (F) Visa is issued to an alien who is invited to China for a visit, an investigation, a lecture, to do business, scientific-technological and culture exchanges, short-term advanced studies or internship for a period of no more than six months. Usually, the validity of a single entry, double entry or multiple entries (F) visa is 90 days or 180 days from the date of issue. This means the holder of the visa shall enter China no later than 90 days or 180 days from the date of issue, otherwise the visa will expire and is null and void. The duration of each stay of a (F) visa ranges from 30 to 120 days, which means the holder of the visa may stay in China for up to 30 to 120 days from the date of entry.
If you have entered into China with a business (F) visa, and desire to stay in China longer than the valid period specified on your current visa, or desire to re-enter into China for business purposes in the near future, you are required to apply for a new F visa. You may apply for a zero-entry, single-entry, double-entry business visa with a valid period of no longer than 6 months, or a multiple-entry business visa with a valid period of 6 months or one year.

There are NO limitation of each stay on the visas issued in the China mainland. Thus, if it is a 6-month F visa, you can stay as long as 180 days without leaving. The entry (ies) is for your planned and unexpected leave. You don¡¯t have to use it up.

To apply for a new F visa in China mainland (also called China F visa extension, China F visa renewal) to stay longer, please check F visa to F visa.