What are the requirements for applying for a clothing shopping guide?

There are many requirements for applying for a regular big company. My brother asked a professional question when he went to work in Bailey to sell Adi. For example, who are the companies selling Adi? What's the difference between these companies? What are the main locations in China? What's special about Bailey? Why did you choose Bailey over others? How do you introduce products to customers when you sell things? How can you talk? Let the customer trust you (for example, learn the customer's speaking style and make the other person feel cordial). Generally, there are initial tests and re-tests. What I want to say is that you must know a lot about the company and products you are applying for. In addition, it comes from shopping tips.