In fact, it is not difficult to judge the authenticity of door-to-door sales. You can ask him which company or bank he belongs to, where is their company address and whether there is a website, and then log in to the Administration for Industry and Commerce to check if there is one. For their company or bank, you should also check the registered capital of their company. If you really need a loan, ask them for more loan information. If you feel satisfied, go to their company to inspect it and it will be clear at a glance!