What is a visa?

Visa is a sovereign authority in national or foreign citizens passport or other travel document endorsement, sealing, to allow the in and out of the country or pass the country, also can saying is awarded to them a kind of certificate.

What is the role of the visa?

Visa is a sovereign in order to safeguard national sovereignty and dignity and interests of a measure. Visa is a sovereign in and out of the country management an important means. Citizens of a  if you want to travel to the other, settlement, trade, study abroad, etc., in addition to must have I have a passport or travel documents, another case, is must get to the visa. Otherwise, it is not possible to attend.

The types of visa?

Visa according to the nature of exit and entry is divided into: exit visas, entry visas, entry and exit visas, entry and exit visa, and visa and transit visa and so on six categories.

Some (region) according to the application for visa entry for the issued visas are divided into: diplomatic visa, business visa, immigration, non-immigrant visas, courtesy, tourism visa, work visa, student visa, business visa visas and their families.

At present, most of the world's visa is divided into: diplomatic visa, official (officials) and ordinary visas.

China's current diplomatic visas, courtesy, service or ordinary visas etc.

What do you mean the visa code?

Some in order to facilitate the identification and management, depending on the application for visa for code with a variety of different letters indicate in the issuance of a visa. This letter is the visa code.

Currently using visa code number is the United States, among them there are as many as 18 kinds of non-immigrant visa code, each category is subdivided into a number. Introduction is as follows:

(1) class A visa (that is, the foreign official visa) issued by the object are:

A - 1: foreign governments in the United States ambassador, minister, professional diplomats, consular officials and their family members;

A - 2: other foreign government officials, employees and their family members;

A - 3:1 and A - A - 2 class visa winner attendants, servants, private employees and their family members.

(2) class B visa (that is, business travel visa) issued by the object are:

B - 1: business trade, etc. For the purpose of dealing with matters of a visit to short-term stay personnel;

B - 2: short-term visiting friends and visitors.

(3) type C visa (transit visa) issued by the object are:

C - 1: transit foreigners;

C - 2: transit foreigners go to the United Nations headquarters in New York;

C - 3: the transit of foreign government officials and entourage, servants, private employees and their families.

(4) class D visa (that is, the crew, the seamen visa) is issued for:

All the crew of the international flights and seafarers on ships.

(5) E class visa (that is, countries