First of all, the contact numbers left by regular companies are all landline numbers, because regular companies have normal work and rest hours, and recruiters don't want to be harassed by job seekers after work. If the phone number reserved by a company is a personal mobile phone number, it is basically a lie.
Secondly, the general company will tell the applicant the specific address of the company, and you will find the company's door directly according to the address, but the general intermediary company will tell you to arrive by car first, and then call to ask when you arrive, which is also a lie in all likelihood.
Finally, and most importantly, regular companies don't charge job seekers a penny. You just need to work hard and get paid, but intermediary companies usually charge you some fees in advance in various names, such as training fees, deposits and so on. Anyone who needs to pay, no matter what money, is a liar company. What's even more funny is that some fraud companies repeatedly deny that they are intermediary companies on the phone, but when you go, they will say that we are not an intermediary and don't charge, but we have to charge some service fees.