What kind of visa does a foreign long-term residence permit refer to?

Foreign long-term residence permit refers to immigrant visa.

Immigrant visa is a document issued to foreign immigrants as an entry visa country. Immigrant visa is closely related to green card, and you can get a green card if you get an immigrant visa. The "green card" is not green, but a pink foreigner registration card. The green card proves that the holder can live permanently in the country where he immigrated and has the right to work legally in his country.

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If you get an American immigrant visa, you can get your social security number after you enter the country, and you can apply for a green card after one year in the United States. You will get a green card within about one year after you apply, which means you have permanent residency in the United States. After three years and nine months of green card, you can apply for the naturalization test, and you can be officially naturalized in the United States through the naturalization test.

Both immigrant visas and green cards are related to "immigrants" becoming American citizens. The difference is that green cards are issued to people who are already in the United States; Immigrant visas are issued to foreign immigrants as proof of entry into the United States. When immigrant visa holders arrive in the United States, they must formally apply for a green card and then apply for citizenship several years later. In addition, green cards and immigrant visas use the same number of immigrants. Immigrant visa holders can get a green card quickly after entering the country, because they have already got a green card quota when they get an immigrant visa.