To apply for a sales category on Amazon, you need to follow these steps:

Register an Amazon seller account: First, you need to register an Amazon seller account so that you can sell products on the platform.

Understand category restrictions: Some categories have sales restrictions on Amazon, which means you need approval to sell products in these categories. When choosing a sales category, make sure you understand the relevant restrictions and requirements.

Apply for a sales category: Log in to the Amazon seller backend and find the "Product Category" or "Add Product" page. Select the category you want to sell in and follow the prompts on the page to complete the application process. Depending on the category you choose, you may need to submit some additional information, such as a brand authorization letter, invoice, etc.

Wait for review: After submitting your application, Amazon will review your application. The review time may vary depending on the category and the information you submit, and generally takes 1-2 weeks. Please wait patiently.

Start selling after the review is passed: Once your application is approved, you can start selling products in the selected category. Please make sure your products comply with Amazon's sales policies and follow the platform rules