If you are a seller selling products on AliExpress and want to set the countries that can be delivered, please follow the steps below:

1. Log in to your AliExpress seller account and enter the seller backend.

2. Navigate to "Store Settings" or similar options, which may be in your account settings or management interface.

3. In the "Store Settings" page, find "Shipping Settings" or "Shipping Settings".

4. In the Shipping Settings page, you will see "Countries/Regions that can be delivered" or similar options.

5. Select the countries or regions you want your products to be delivered to. You can select them one by one or select entire regions, such as Europe, North America, etc.

6. If needed, you can also set different shipping policies or shipping methods for specific countries/regions. For example, you can set the shipping price for each country, the conditions for free shipping, etc.

7. Confirm and save your settings.

Please note that AliExpress may impose certain restrictions on the countries and regions that can be delivered. Some countries may not be on the optional list, or specific conditions may need to be met before sales and delivery can be carried out. In addition, customs regulations and import requirements may also be different in each country, and you need to make sure that your products comply with local laws and regulations.

It is recommended to carefully study the target market and understand the relevant international transportation and customs regulations before setting the countries that can be delivered to ensure that your products can be sold and delivered in compliance with regulations. In addition, contact the AliExpress customer support team for more specific and up-to-date setup guidance.