When you receive an application call from an unknown company, how do you ask the other party?

Ask the legal full name and address of the other company, then go to the website of the industrial and commercial bureau where the company is located to inquire about the company's registered operation and credit records, and then go to some websites dedicated to exposing fraudulent companies to judge the authenticity of the company by filling in the legal full name of the company and knowing its business activities or reported records.