First of all, it depends on the relevant qualifications of the company. If the company doesn't even have qualifications, it's definitely fraud.
Secondly, look at the successful cases of overseas companies, which is actually more telling than qualifications. If an overseas company can't come up with a large number of successful cases, it can only show that it is either a liar or a cover. Generally, if an overseas institution successfully manages a customer, it will definitely have a copy of the visa.
Third, consulting the company's reputation, many companies don't do things with money.
Fourth, look at the employer information provided by the company. It is best to implement the detailed information of the employer through the intermediary company: for example, what to do, we can't say that the intermediary company is vague about the formal work of the subway, but should ask what to do, whether there is a formal labor contract for working hours, how much salary, welfare benefits, accommodation and other details, and sometimes the details can also show whether the company is formal. If he doesn't know this, he must be a fool. I hope it works for you!
Because I have worked in an overseas labor service company, these methods seem simple, but they are actually very useful!
Finally, I wish you success in going abroad as you wish, and don't be deceived. Tens of thousands of dollars are the hard-earned money of the domestic people!