Registering for the cross-border e-commerce seller version requires the following steps:

1. First go to the official website of the cross-border e-commerce platform, such as Alibaba International Station, Amazon International Station, EBAY, etc., and find the registration entrance.

2. Provide basic personal and company information, such as name, ID number, company name, tax certificate, etc.

3. Submit relevant qualification certification materials according to the platform requirements, such as enterprise registration certificate, business license, import and export rights certificate, etc.

4. Wait for review. After the review is passed, you can log in to the seller version to start product listing, packaging and shipping, etc. Summary: To register for the cross-border e-commerce seller version, you need to provide personal and company information, relevant qualification certification materials, and after review, you can enter the seller version platform for sales.