Shipping from China and Hong Kong to South Korea: customs, Busan and KC certification

Customs authority: Korea Customs Service, through the UNI-PASS system
Clearance speed: Among the fastest in the world for compliant shipments
Product control: KC certification required for electrical, electronic and consumer goods
Import VAT: 10 percent, recoverable by registered businesses
Trade agreements: Extensive FTA network, including with China
Main entry points: Busan and Incheon by sea, Incheon by air

KC marking is the Korean conformity regime, and it covers electrical goods, electronics, consumer products and children items among others. It is obtained before import, it involves testing and in many cases factory assessment, and Korean customs and the market surveillance authorities both check it. Foreign certifications do not substitute for it.

Busan is one of the largest transhipment ports in the world, which gives South Korea exceptional connectivity, including to and from every Chinese port. Transits are short and frequency is high, so the freight side of a Korean import is rarely the hard part.

Korea also has a dense free trade agreement network, including with China. Where a certificate of origin under the relevant agreement is properly issued, duty can be reduced or eliminated, and it is worth building into the pricing rather than treating as a bonus.

Where cargo lands

Main freight and distribution centres

Seoul and the capital region

The dominant market, served by Incheon port and airport, with most distribution concentrated here.

Busan

The main port city and the second market, with the deepest logistics infrastructure in the country.

Incheon

The gateway to Seoul, with both a major port and the country main airport.

Ulsan and Gwangyang

Heavy industry, petrochemical and shipbuilding centres with their own specialised ports.

Sea freight

Ports of entry and what they mean for your cargo

Busan

One of the largest transhipment ports in the world, with unmatched service frequency to and from China and the rest of Asia.

Incheon

Serves the capital region directly, which for Seoul destined cargo saves a long domestic leg from Busan.

Gwangyang

Industrial port on the south coast, oriented towards steel and petrochemicals.

Pyeongtaek

Growing port south of Incheon, used for vehicles and containers serving the capital region.

Busan has the frequency and the connectivity, but Incheon lands the cargo next to the Seoul market. For capital region destinations the domestic leg from Busan is significant enough to make Incheon the better answer.

Transit from China is very short, with services from northern Chinese ports arriving in days. This makes sea a realistic option for cargo that would need air freight from further afield.

Korean terminals are efficient and automated, and clearance keeps pace with them, so the bottleneck in a Korean import is almost always certification rather than logistics.

Air freight

Airports and when air is the right answer

Incheon (ICN)

One of the busiest cargo airports in the world, with extensive direct capacity from every Asian origin and excellent facilities.

Gimhae, Busan (PUS)

Regional gateway serving the southeast.

Incheon is a genuine global cargo hub, so air freight into Korea is frequent, fast and well handled.

For high-value electronics and semiconductors, which dominate Korean air cargo, handling quality and security at Incheon are at the top end of what is available anywhere.

Indicative transit times

How long the movement usually takes

Sea FCL, South China to BusanAround 4 to 8 days port to portVery frequent services and short transits.
Sea LCL, South China to South KoreaAround 10 to 16 days door to doorConsolidation adds time but the ocean leg is short.
Air freight, Hong Kong or South China to IncheonAround 2 to 5 days door to doorFrequent direct services including handling and clearance.
KC certification lead timeArrange before shippingTesting and, for many categories, factory assessment are required.

These ranges are indicative and exist to help you plan. Real transit time depends on the service, the season, the routing and the clearance itself, and we confirm it per shipment rather than publish it as a promise.

Customs

How clearance into South Korea actually works

The competent authority is Korea Customs Service.

Clearance through UNI-PASS is fast, often within hours for a compliant shipment. The system is well designed and the administration is not obstructive, which makes Korea one of the easier Asian markets to operate in once the compliance side is handled.

KC certification is the requirement that decides outcomes. Electrical goods, electronics, consumer products and children items generally require it, obtained before import through testing and, in many categories, factory assessment. It is not a document that can be produced retroactively.

VAT at 10 percent applies to imports and is recoverable by registered businesses. Duty depends on classification, with a general rate applying where no preference is available.

Korea has free trade agreements with China and many other partners. A properly issued certificate of origin under the applicable agreement can reduce or eliminate duty, so it belongs in the pricing conversation before shipping.

A foreign company without a Korean entity needs a local importer or a customs representative, since the declarant must be established in Korea.

Documentation

What you need to have ready

Commercial invoice

Value, terms and a precise description consistent with the transport document.

Packing list

Piece counts, weights and dimensions per package.

Bill of Lading or Air Waybill

The transport contract and the release instrument.

KC certification

For electrical, electronic and consumer products, obtained before import.

Certificate of origin

Under the relevant free trade agreement, to claim reduced or zero duty.

Import declaration through UNI-PASS

Filed by the importer or its customs broker.

Korean business registration

Of the importer of record.

Product specific approvals

Food, cosmetics, medical device or chemical registrations as applicable.

Controlled and restricted goods

What gets stopped, and why

KC certification is required for a wide range of products and is enforced both at the border and in the market. This is the most common obstacle for new importers.
Chemicals fall under Korean chemical registration requirements, which are demanding and apply to substances as well as products containing them.
Food, cosmetics and health products fall under the Ministry of Food and Drug Safety with their own registration and labelling requirements, including Korean language labelling.
Radio and wireless equipment requires its own certification alongside KC.
Intellectual property enforcement is active at the border.
Wood packaging must comply with ISPM 15.

Working with Velonex

What clients usually bring us in for on this lane

Electrical and electronic goods where KC certification has to be secured before shipping, because clearance speed is worthless if the product cannot legally enter.
Using the China Korea free trade agreement properly, so the duty relief is captured rather than left on the table through a defective certificate of origin.
Choosing Incheon over Busan for capital region cargo, where the domestic leg is long enough to matter.
High-value electronics and components, where Incheon handling quality and short transits suit cargo that cannot be damaged or delayed.
Companies with no Korean entity, who need a local importer or customs representative arrangement in place before shipping.

Get a quote

Tell us what needs to move to South Korea

We listen before we quote. Share the cargo, the deadline and the constraint, and we will come back with a route that accounts for all three, the documents it will need and a timeline we can stand behind.

Your details

Includes your name, company name and email address

Shipment route

Includes your pickup location and destination

Cargo type

Includes the type of cargo you are shipping

Special requirements

Includes a short note about your challenge

Timeline

Includes your desired timeline

Your quote

A tailored response based on everything above

Corporate logistics partner

Trust, clarity and operational follow through for complex cargo.

Not ready for a quote? Email info@velonex-hk.com or message us on WhatsApp with the question and we will answer it.

Sources

Where this information comes from

General guidance, last reviewed August 2026. Customs rules and product requirements change, and the treatment of any specific shipment depends on its classification, origin and value. Confirm the detail with us or with the authority before you commit to a movement.

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