1. Oral sales promotion requires you to spend a lot of manpower or energy to promote enterprises and products to customers, but limited by the personal quality of sales staff, it is inevitable that there will be omissions and unfocused problems, and customers will feel bored and dissatisfied. 2. At the exhibition, you spent a lot of money to print the brochure with guyuan0 1, but it caused a lot of inconvenient materials and increased the burden on you and your customers.

3. The propaganda of newspapers, magazines and TV advertisements can only touch a certain point of an enterprise or product, and the propaganda is extremely incomplete. Media other than TV advertisements can't give customers the most intuitive and emotional understanding.