China Post vs ePacket vs Yanwen: Speed, Duty and How to Tell Which Carrier You Have

When you order from AliExpress, Temu or another Chinese marketplace you get a long list of shipping options and almost no explanation of what separates them. The difference between the slowest and the fastest on the same order can be thirty days. Since 2025 there is a second difference that costs more than the shipping ever did: the duty rules changed, and the cheapest service is no longer automatically the cheapest purchase.

This guide compares all the major Chinese shipping services so you can make an informed choice.

The rule that changed the answer

For years the advice on this page was simple: pick the fastest cheap service and enjoy the low prices. That advice is now incomplete, because the shipping fee is no longer the only cost.

The US stopped duty-free treatment of shipments worth $800 or less for China and Hong Kong on 2 May 2025 and for all countries on 29 August 2025 (Executive Order 14324). On 24 June 2026 CBP published two interim final rules that suspend the exemption indefinitely, one for mail and one for all other modes, and the statutory exemption is repealed from 1 July 2027. Every parcel entering the US from China is now dutiable, whatever it cost.

Mail and courier parcels are treated the same. The rate on a given item depends on its tariff classification, its country of origin and the tariff measures in force on the day it enters, and US tariffs on China-origin goods have changed several times since 2025. On a cheap order the duty can cost more than the shipping, so the cheapest shipping option is not always the cheapest purchase. The table below uses an example rate of 30% for illustration and applies it to the price of the goods only, because US customs value does not include international freight.

Elsewhere the picture is different again. The same $25 clothing order sent to the United Kingdom comes to $33.60, because it sits below the GBP 135 duty threshold and attracts only 20% VAT. A $60 electronics order to Germany comes to about $81.46 with the EU's interim €3 customs duty, which applies per item category to parcels valued under €150 from 1 July 2026 to 1 July 2028, plus 19% VAT. Destination now matters as much as carrier.

China Post Air Mail (Registered and Unregistered)

China Post is the official postal service of China, operated by the Chinese government.

• Air Mail Unregistered: The cheapest option, but no tracking. Not recommended for items of any value.
• Air Mail Registered: Adds basic tracking (tracking number format: RAXXXXXXXXCN). Tracking visibility is limited. You'll see scans in China and when it enters your country's postal system, but often nothing in between.

• Transit time to USA: 15-45 days
• Reliability: Moderate. Most packages arrive, but the long window creates uncertainty
• Use for: Very cheap, non-urgent items where you're comfortable waiting

The duty consequence is the part that changed. China Post moves parcels through the postal channel, and parcels sent by mail owe duty at any value.

Why the tracking goes dark. An unregistered parcel has no tracking at all, and a registered one is scanned on dispatch from China and again when it enters the US postal system, with little in between. That middle silence is not a fault. It is the absence of a commercial scanning contract, and it typically lasts one to three weeks on this service.

When a seller chooses it: low-value listings where the shipping price is the selling point, and sellers who ship in volume and absorb occasional losses rather than paying for visibility.

If it goes wrong, China Post has a postal claims route, but the sender normally has to file it, and compensation is capped at the fixed amount set for registered items, which is often below the order value.

ePacket: The Best Budget International Option

ePacket (also called China Post ePacket or EUB ePacket) was developed as a collaboration between China Post and postal services in the USA, UK, and other countries to provide faster, trackable economy shipping.

• Tracking: Excellent. Detailed scans from origin to delivery, including USPS final mile tracking in the USA
• Transit time to USA: 7-20 days (typically around 10-15 days in normal conditions)
• Reliability: High. ePacket carries in-process tracking scans, and USPS handles final delivery in the US
• Cost: Slightly higher than regular China Post Air Mail, but still very affordable (often $2-$5 for small packages)
• Final delivery: In the USA, ePacket is handed off to USPS for final delivery. Your USPS tracking number will become active once USPS receives the package.
• Limitation: ePacket has weight and dimension limits, generally for packages under 2 kg (4.4 lbs) and within the size limits China Post sets for the service

China EMS (Express Mail Service)

EMS is China Post's fastest international service, and also one of the most expensive. Think of it as the express tier within the postal system.

• Transit time to USA: 5-10 business days
• Tracking: Detailed, with scans at all major transit points
• Reliability: High. EMS has priority handling at customs
• Cost: Significantly higher than ePacket or standard China Post

Good for valuable items where speed and tracking matter more than cost.

What you are buying is priority handling. EMS parcels are presented to customs ahead of ordinary mail and are scanned at every major transit point, which is why a 5-10 day window holds up in practice rather than drifting the way economy services do. Tracking continues after the handoff to USPS on the same number.

When a seller chooses it: electronics, jewellery, collectibles, and anything where a lost parcel would cost the seller more than the shipping premium.

If it goes wrong, EMS inherits the postal claims process, so there is a defined route to recovery, unlike most of the private consolidators below. Combined with the scan density, that makes it the safest choice on this list for anything you would be genuinely upset to lose.

Yanwen

Yanwen is a private Chinese express company that specializes in cross-border e-commerce logistics. It's commonly used by mid-tier AliExpress sellers as a step up from China Post in terms of speed and tracking.

• Transit time to USA: 10-20 days
• Tracking: Good tracking within China and reasonable updates internationally
• Reliability: Generally good, though customer service is harder to reach than major carriers
• Cost: Competitive. Often chosen as a middle ground between cheap postal and expensive express

Yanwen sits in an awkward middle position, and it shows in the tracking number. It is a private company, but it injects parcels into the postal channel, which is why its numbers end in CN like a China Post item.

Tracking behaves in two halves. Scans inside China are frequent and detailed. Once the parcel is handed to the destination postal service the updates thin out, and it is common to see nothing for several days before a US scan appears. That gap is the handoff, not a loss.

When a seller chooses it: mid-tier AliExpress stores that want better speed than China Post without paying express rates.

The point to weigh before buying: Yanwen publishes no consumer claims process. If the parcel disappears you are relying entirely on the marketplace's buyer protection, which means the deadline that matters is the platform's, not the carrier's.

4PX (Fourth Party Logistics)

4PX is a private Chinese logistics company that consolidates parcels for AliExpress and other marketplace sellers.

• Transit time to USA: 10-25 days
• Tracking: Good tracking, with integration into USPS for final delivery in the USA
• Reliability: Good for standard packages
• Used by: Many mid-to-large AliExpress stores

The USPS integration is the practical advantage. 4PX hands parcels into the USPS network for final delivery with the tracking carried across, so the same number keeps updating to the door rather than going quiet at the border. Among the consolidators it is one of the more consistent on scan continuity.

Where the time goes: the 10-25 day range is mostly consolidation at the Chinese end. Parcels wait to fill a consignment before flying, so a quiet first week is normal and does not mean the seller failed to dispatch.

When a seller chooses it: mid-to-large AliExpress stores shipping steady volume, where the consolidation wait is acceptable because the per-parcel cost is low.

If it goes wrong, 4PX publishes no consumer claims process, so recovery runs through the marketplace rather than the carrier.

Cainiao Super Economy / Standard

Cainiao is Alibaba's (AliExpress's parent company) logistics network. It consolidates shipments from multiple sellers for efficient cross-border shipping.

• Super Economy: 15-30 days, cheapest option
• Standard: 8-15 days, better tracking

Both options use Cainiao's network in China, then hand off to local postal carriers (USPS in the USA) for final delivery. Tracking tends to be good within the Cainiao ecosystem.

Cainiao is Alibaba's own network, which is why it behaves differently from a normal carrier. It is not primarily a delivery company but a logistics layer that books capacity across other carriers, so the actual aircraft and the final-mile courier can vary between two parcels sent on the same service.

Choosing between the two tiers is a real decision, not a minor upgrade. Super Economy at 15-30 days is genuinely slow and lightly scanned; Standard at 8-15 days is close to double the speed with materially better visibility. On AliExpress the price gap is often a dollar or two, and Standard is usually worth it.

Tracking quirk worth knowing: scans are detailed while the parcel is inside Cainiao's own ecosystem and can stop abruptly at the handoff to USPS. Checking the number on the USPS site once it reaches the US often shows movement the Cainiao page has not caught up with.

If it goes wrong, recovery is through AliExpress buyer protection rather than the carrier.

YunExpress

YunExpress is increasingly popular on AliExpress and offers a balance of speed and cost. It's one of the better newer Chinese logistics companies for speed and transparency.

• Transit time to USA: 7-15 days
• Tracking: Good quality, with integration with USPS or UPS for final delivery

YunExpress is the fastest of the economy consolidators, and the one whose 7-15 day window holds up most reliably. It achieves that by flying more frequently and consolidating for less time at the Chinese end, so the quiet first week common on 4PX and Cainiao is usually shorter here.

The identification trap: The YT prefix alone does not prove which company carries your parcel. A 13-character number ending in CN follows the UPU S10 postal format, which means it was issued under China's authority as a UPU member country. Ask the seller which service shipped the order, or paste the full number into the tracker.

When a seller chooses it: increasingly the default on mid-range AliExpress listings, and common on sellers who advertise faster delivery without charging express prices.

If it goes wrong, there is no published consumer claims process, so the marketplace deadline is the one that counts.

How to tell which carrier you actually have

Sellers rarely name the service, and the tracking number is often the only clue. Each carrier issues a recognisable format, so the number itself tells you who is carrying the parcel and which site will show real scans.

The pair worth memorising is Yanwen and YunExpress, because both begin with the letters YT. A 13-character YT number ending in CN is a postal number; a longer YT number with no country suffix is a private reference, so check the seller's shipping notice.

What happens when one of these goes missing

Speed is the usual question. The one nobody asks until it matters is who pays when a parcel disappears, and here the consolidators differ sharply from the postal services.

This sounds like a disadvantage for the consolidators and generally is not. Marketplace buyer protection reimburses what you paid for the order, while a postal claim pays a capped amount and usually has to be filed by the seller. For a parcel carried by Cainiao or YunExpress, opening a dispute with AliExpress is both faster and worth more than chasing the carrier.

Which Should You Choose? The Verdict

For speed and tracking quality on AliExpress orders, ePacket or YunExpress remain the strongest economy choices and the price difference over the slowest option is usually $1 to $3. On shipments to the United States, add the duty question before deciding: since the de-minimis allowance ended, parcels owe duty at any value, and on a cheap order the duty can cost more than the shipping.

Enter any Chinese carrier tracking number into ParcelsZen to get updates regardless of which service your seller used. The tracker detects the carrier from the tracking number.

• ePacket: Best budget choice, 7-20 days, excellent tracking
• YunExpress: Fastest economy, 7-15 days
• Cainiao Standard: Good middle ground, 8-15 days
• China EMS: Express quality, postal price, 5-10 days
• China Post Registered: Cheapest tracked, 15-45 days