What's the difference between getting an American visa and mailing it?

There is a big difference between visa collection and mailing in the United States;

The speed of 1 is different.

If you choose to mail a visa, it usually takes about 5-7 working days, which is relatively slow. If you choose to go to the American Embassy to get a visa, you can get it right away, which is relatively fast.

2. The cost is different.

If you choose to mail a visa to your home, it usually costs 5 to 20 dollars, while if you choose to get a visa at the American embassy, it is almost free.

3. Different uses

It is a physical phenomenon discovered in 1946. It is mainly used in physics, chemistry, biology and other fields, and its main function is to conduct qualitative and quantitative research on matter and spatial positioning. 1973, Lauterpur and others first reported the imaging technology based on the principle of magnetic vibration.

In recent years, self-extraction as a part of medical imaging has been widely used in daily clinical work. In order to avoid confusion with radioisotope imaging in nuclear medicine, this technique is called magnetic resonance imaging. Mail is a new diagnostic method, which uses the magnetic vibration signal generated by the nuclear vibration in the magnetic field to build the image.

The density of hydrogen protons, the velocity of hydrogen protons, T 1 relaxation time, T2 relaxation time and various scanning parameters can all produce MRI signals and affect the intensity of MRI signals.

4. Do I need to fill in a certificate?

Choose to send a visa to your home. Under normal circumstances, it can be delivered by express delivery, without too much proof. If you get a visa yourself, you need to be accompanied by an American citizen with a green card.

5. Different conditions are needed.

First of all, mailing a visa to the United States does not require any conditions. You can basically apply. As a developed country, the United States has a certain probability of refusing visas. Generally speaking, the pass rate is not very good, and it is not very easy to handle. And if you choose to get a visa at the American embassy, the most important thing is to look at your personal information, which is relatively simple.

Extended data

Precautions:

1, American visa application materials are strictly required, and the corresponding company will provide customers with free samples of American visa documents to download and assist customers in reviewing American visa application materials in time.

2. American visa applications usually require interviews, and the corresponding companies will provide customers with arrangements to make an appointment for American visa interviews. Appointment interview time is usually one month in advance. Please make an appointment 2-3 months in advance during the peak season.

From 3.20 10,1,15, American visa reservation must provide visa fee receipt number, one receipt corresponds to one person, and the binding mechanism cannot be modified. The visa fee can be rescheduled once for free after the face-to-face signing, and then the 50 yuan service fee will be charged for each rescheduling. The interview will be cancelled after the appointment, and the visa fee will not be refunded.

4. You need to provide a personal data form and a copy of the first page of your passport to make an appointment for the interview of American visa application. Global communication will provide written visa precautions and required information for American visa applicants, as well as telephone/face-to-face training before face-to-face signing;

5. It is suggested that all the originals of American visa application materials should be brought with you during the interview so that visa officers can check them in time (ID card, household registration book, divorce certificate, retirement certificate, real estate license, motor vehicle driver's license, bank certificate, etc.). ).

6. Any guest who has applied for an immigrant visa or a non-immigrant visa must truthfully state whether his previous application was approved; Anyone who has immediate family members in the United States, whether or not to visit, must truthfully explain.

Baidu Encyclopedia-American Visa