4PX Express

4PX Express is a China-based international logistics provider founded in 2004 and headquartered in Shenzhen. It specializes in cross-border e-commerce fulfillment, serving merchants on platforms like AliExpress, eBay, and Shopify with warehousing, last-mile delivery, and returns management across 200+ countries and regions. 4PX partners with major global carriers including DHL, UPS, and national postal services, and is also the exclusive agent of Singapore Post (SingPost) in China.

Its core services cover standard and express international shipping, overseas warehousing in markets like the US, UK, and Germany, returns logistics, and API integration for automated label generation. Available products include EMS, ordinary airmail parcels, and registered parcels. 4PX's Post-link service ships cargo from China by direct flight and completes last-mile delivery via local post and courier, offering three service tiers: Registered Mail, Ordinary Mail, and Air Mail Parcel.

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