1. The title of the letter of guarantee should be concise and to the point, and directly state "On-site unsealing letter of guarantee".

2. The letter of guarantee shall specify the guarantor's name, gender, age, contact information and other basic information in detail.

3, clearly list the matters that need to be guaranteed.

4. Briefly explain the reasons for being banned before, and realize your own mistakes and shortcomings.

5. List in detail the measures taken to prevent the recurrence of infringement.

6. Clearly list the commitment period, which should be consistent with the platform unsealing time.

7. The guarantor shall personally sign and date the letter of guarantee to confirm the authenticity of the letter of guarantee.