C Visas are conducted according to relevant bilateral visa agreements, if there are, for staff members working on trains, crewmembers on planes and seamen on shipboards of international transportations.

In case there are not reciprocal visa agreements or of beyond their regulations, single or double entry visas may be granted;

Crew members working on private or charter planes are required to apply visas with business letters from their employing companies. Only after the flying permits are obtained from relevant Chinese authority could the said crew visas come into effect.