You need to prepare the following materials:

1. Personal information: including your name, contact information, address and other personal identification information.

2. ID: Usually you need to provide a scanned copy or photo of your ID card or passport or other valid ID.

3. Bank account information: You need to provide a valid bank account to receive your sales revenue on AliExpress. Usually you need to provide the name, account number and bank information of the bank account.

4. Company information (optional): If you plan to open a store in the name of a company, you may need to provide relevant documents such as the company's registration certificate, tax registration certificate, business license, etc.

5. Tax information (optional): Depending on the requirements of your country and region, you may need to provide relevant tax registration certificates or tax numbers.

6. Product information: You need to prepare the product information you plan to sell on AliExpress, including product name, description, price, inventory, etc.

7. Pictures and videos: In order to showcase your products, you need to prepare pictures of the products and possible video materials.

8. Logistics information: You need to provide information about your logistics partner, including the name of the courier company, freight policy, etc.