Beijing doesn't know, tell you Guangzhou, line up, enter (except interview materials, you must leave something free, don't take it with you, such as your mobile phone backpack), hand in the materials, finger-click, wait in the lobby, collectively stand up and swear not to lie, wait for the immigration officials to call the number, and go to the designated location for an interview after hearing your number. Pay attention to the toilet first, so as not to be called. It's still convenient for you. It is very bad to miss it. At least the immigration officer has a bad impression on you, doesn't he? Pay attention to honking the horn, and don't look around when sitting in the hall, giving people the appearance of being nervous and guilty, and appearing generous and calm. Don't be too modest or too proud when talking to the immigration officer. Anyway, it is good to be modest, prudent, generous and decent. Practice immigration interview questions in advance, especially English interview questions. If you don't understand, let him say it again. Don't answer indiscriminately. If you make a mistake, you will regret it too late.
Pay attention to attitude and language expression to make him feel that you will come back as scheduled and will not stay in the United States. Of course, you'd better not have any close friends or close relatives in the United States, otherwise you will be suspected, and you'd better not lie, otherwise you may be refused entry to the United States forever in the future.
But for a general business visa, it is not difficult if your domestic company is more powerful and your position is not bad. Unless your situation is very suspicious, you should get a visa.