Foreign nationals visiting China for business, including trade fairs such as China Maritime, normally need an M (business) visa arranged before travel. The standard application requires a passport valid for at least six months, a completed Chinese visa application form, and an invitation letter from a Chinese company or organisation. Some nationalities may instead qualify for visa-free entry, a mutual visa exemption agreement, or a port visa on arrival; confirm your own case with the nearest Chinese embassy, consulate or China Visa Application Service Centre.
Estimated cost: Varies by visa type and nationality (check official site).
Processing: Varies by nationality; apply several weeks before travel.
通过官方中国签证门户或 China Visa Application Service Centre 申请,并选择与您旅行目的相符的签证类别,因为以不符合您实际目的的类别申请可能导致被拒签。
Official