To register a company on Amazon, you first need to create a merchant account and fill in relevant information, such as the company name and address.

Then, you need to confirm the company's qualifications and identity and provide relevant supporting documents, such as tax registration certificates and business licenses.

Next, you need to set up product listings and prices to start selling. Finally, in order to keep the company running well, you need to understand and comply with Amazon's policies, such as compliance regulations and return policies.