The electronic visa or e-business visa can only be applied for if you are entering China through Shanghai.
To apply for it, you will need the following documentation:
Passport (copies of all pages, including the blank page and the cover)
Flight ticket
Hotel reservation for all the nights you will spend in China
Passport photo
Invitation letter
The e-business visa, once issued, must be used within a maximum period of 30 days.
Click here to apply for the electronic business visa for Shanghai (5% exclusive discount)