Contact Us

Last updated: 2026-09-18

We built ylishi.tools from our own experience running Amazon FBA businesses. Whether you have a question about FBA fees, want to suggest a new feature, or are interested in partnership opportunities — we'd love to hear from you.

📧 Email Support

💬 Connect With Us

📋 What We Can Help With

• FBA Fee Questions — Help understanding specific Amazon charges or calculations
• Tool Feature Requests — New calculators, improvements to existing tools
• Bug Reports — If something doesn't calculate correctly, tell us
• Partnerships & Integrations — API access, affiliate partnerships, data collaboration
• Data & Methodology — Questions about how our fee data is sourced and updated

🏢 About Ylishi

ylishi.tools is built by Yuwen Chen, an 8-year Amazon FBA seller with 11 years in cross-border e-commerce. Based in Shenzhen, China, we serve sellers worldwide with free tools and up-to-date fee data.

Company: SHENZHEN YILISHI FUSHI YOUXIAN GONGSI
Unified Social Credit Code: 91440300MA5DAG145C
Registered address: Room 318A8, Building 618, Bagualing Industrial Area, Bagua Yi Road, Pengsheng Community, Yuanling Sub-district, Futian District, Shenzhen, Guangdong, P.R. China