常见问题 & 参考
查找有关包裹追踪、运输时间和递送状态的常见问题的答案
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UPS Tracking Number Format: 1Z Codes Decoded
Break down any UPS 1Z tracking number digit by digit. See which service code means Ground vs. Next Day Air, verify the check digit, and spot invalid numbers before contacting support.
FedEx Tracking Number Format: All Lengths
Tell apart FedEx 12-digit Express, 15-digit Ground, 20-digit SmartPost, and 22-digit Freight tracking numbers. Includes real examples and a check digit calculator.
USPS Tracking Number Format: Every Prefix
Identify any USPS tracking number by its prefix. Covers 9400, 9205, 9261, and all 20- to 34-digit formats with real examples so you know which mail class is carrying your package.
Royal Mail Tracking Number Format: Validator & Service Codes
Learn to decode any Royal Mail tracking number. Details on international S10 formats, 2D barcode numbers, and domestic 13-digit codes.
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How air waybill (AWB) tracking works for air cargo
AWB numbers follow their own format and tracking rules. Learn the 11-digit structure, airline prefixes, and how to track air cargo end to end.
AliExpress Standard Shipping Tracking Format
Your AliExpress LP code changes to a 13-character postal number after leaving China. See exactly when the switch happens and how to track both numbers at once.
Anti-dumping duties: Extra taxes you didn't expect
Understand why some goods face massive extra taxes and how to check if your items are affected.
Black Friday Customs and International Shipping Guide
Black Friday orders from overseas sellers face customs every year, but November volumes create longer holds and higher inspection rates. Know what to expect.
Black Friday Delayed Delivery: What to Do When Packages Are Late
Holiday shipping delays are predictable. This guide covers when to worry, who to contact, and how to get your package moving again during peak season.
Black Friday Package Protection: Insurance, Buyer Beware, and Fraud Prevention
Black Friday drives a spike in shipping fraud and lost packages. Know how to protect your orders before they ship and what to do if something goes wrong.
Black Friday Return Guide: Deadlines, Policies, and How to Get Refunds Fast
Holiday return windows are extended but not infinite. Know each retailer's deadline, condition rules, and the fastest path to a refund this season.
Black Friday Shipping Costs: Hidden Fees, Delivery Options, and How to Save
Black Friday shipping is cheaper than it looks if you know which options carry hidden fees and which do not. Here is the breakdown every shopper needs.
Black Friday Tracking Guide: What Every Buyer Should Know
Holiday packages move differently in November. Here is how to track orders across major retailers and carriers when everything is busy, delayed, or missing.
Cainiao Tracking Number Format and LP Codes
Decode Cainiao LP00 tracking numbers used by AliExpress and Temu. See why the code changes after leaving China and which local carrier picks up your package.
China Post Tracking: R, E, L, C Prefix Guide
Figure out what the R, E, L, or C prefix on your China Post tracking number actually means. Covers ePacket (LX), EMS (EX), and registered mail (RX) with real number breakdowns.
Customs Clearance Process for Import and Export
Learn about the customs clearance process and its importance in trade. Find out how to clear customs and start your import or export journey