RESEARCH LIBRARY
Detailed guides for better decisions.
Long-form reading on spreadsheets, QC evidence, International parcel planning and Chinese marketplace links.
How to Use a USFans Spreadsheet in 2026
A disciplined workflow for browsing categories, comparing listings and carrying the right evidence into checkout.
How to Buy Through USFans: A Complete Beginner Workflow
A fact-checked route from live marketplace link and variant selection to warehouse QC, returns and the final international parcel.
USFans QC Photos: A Practical Inspection Checklist
What to examine, what to measure and where visual evidence stops.
International Shipping Costs: Plan the Full Parcel
A clear framework for actual weight, volumetric weight, packaging and route decisions.
USFans Warehouse & Returns: A Practical Timing Guide
How to review warehouse evidence, use the live five-day notice carefully and keep returns, refunds and storage decisions separate.
Taobao, Weidian or 1688? Read the Link Before You Buy
How marketplace structure changes the questions you should ask before routing a listing through an agent.