You can check at the Industrial and Commercial Bureau whether this company exists, the legal person, ICP filing, whether the website corresponds to the main body of business license, and whether Baidu has launched credit certification, V certification, official website certification, etc. See if this company has Baidu's authoritative certification, and then further talk about whether online customer service uses personal QQ, corporate QQ or marketing QQ. If so, at least it proves that this company has a high reputation. Next, you should check whether there is any negative news in this enterprise official website, or whether there are any complaints from foreign students. If not, you can ask the other party to provide detailed enterprise account number and ask for business license and contract or agreement. If they are all formal, they are basically true. There are a lot of liars now, so it's normal to be cautious.