2. Enter the product name or brand keyword in the search box, and then press the search button.

3. In the search results, find the brand products you want to query.

4. Click the product link to enter the product page.

5. On the product page, check the product information, inventory and evaluation.

6. If the goods are out of stock, you can see the corresponding prompt information on the product page, such as "insufficient inventory" or "unable to buy".