The way to get Amazon merchant link is as follows:

1. Register as an Amazon seller: First, you need to register as a seller on Amazon's official website if you have not sold goods on Amazon yet. This step will require you to provide some personal information and company information, and submit your product or service information.

2. Submit a trademark registration application: On Amazon's official website, you need to enter the "Brand Registry Center" and submit a trademark registration application. Amazon requires that the trademark must be registered in your country or a country protected by relevant international treaties. When submitting an application, you need to upload the brand qualification certificate related to the registered trademark.

3. Waiting for review: It takes about 14 days to wait during the review period. If the review is passed, you will receive an invitation letter for the merchant link application.

4. Sign the contract and pay: Once the contract is signed and the payment is made, you will get the Amazon brand registration merchant link.

After these steps are completed, you can successfully obtain the Amazon merchant link.