Chain · Lithium-ion batteries and electric cars

China ships three-fifths of lithium-ion cells and three-quarters of lithium hydroxide (2024)

In 2024 China shipped 60% of the world’s lithium-ion cells and 77% of its lithium hydroxide, the chain’s chokepoint, while Korea (56%) and China (27%) led the exports of cathode material.

  • 13stages from ore to product
  • $199.6bnlargest stage, 2024: Battery-electric and plug-in cars
  • HHI 0.61chokepoint, 2024: Lithium hydroxide
  • Korea · GL 0.99most two-way stage, 2024: Lithium-ion cells and packs

The chain in 2024

S1 Ores and graphite

Lithium ore (spodumene concentrate)

2530.90
$6.5bn · $0.36/kgAUS 53%

Nickel ore

2604.00
$4.4bn · $0.08/kgPHL 47%

Cobalt ore

2605.00
$39mCOD 84%

Natural graphite

2504.102504.90
$616m · $1.3/kgCHN 50%
Use share ~32% · IEA, 2024 data
S2 Refined chemicals

Lithium carbonate

2836.91
$4.0bn · $12.7/kgCHL 74%

Lithium hydroxide

2825.20
$2.6bn · $16/kgCHN 77%
Chokepoint · HHI 0.61

Nickel mattes and intermediates (incl. MHP)

7501.107501.202833.24
$14.5bn · $5.1/kgIDN 57%
Use share ~15% · Natural Resources Canada, 2024 data

Cobalt intermediates, oxides and hydroxides

8105.202822.00
$5.1bn · $6.6/kgCOD 66%
S3 Electrode materials and parts

Cathode active material

2841.902842.90
$7.5bn · $14.2/kgKOR 56%

Anode graphite (artificial)

3801.10
$2.3bn · $1.9/kgCHN 60%
Use share ~32% · IEA, 2024 data

Battery parts (separators, cans, other parts)

8507.90
$10.5bn · $11.7/kgCHN 37%
S4 Cells and packs

Lithium-ion cells and packs

8507.60
$115.4bn · $32.2/kgCHN 60%
Use share ~90% · IEA, 2023 dataalso in Chips and electronics
S5 Electric cars

Battery-electric and plug-in cars

8703.808703.608703.70
$199.6bn · $19.1/kgDEU 26%
World trade and top exporter by stage, 2024; unit value where net weight covers at least 80% of value. Chokepoint: the stage worth at least $1bn with the highest exporter HHI, when above 0.25. Dashed: side inputs and feedstocks, which join from above. Source: UN Comtrade, Final data, HS6; mirror rule.

Who trades each stage, 2024

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Imports | ExportsHalf-disc area ∝ value; one scale for every year

Lithium hydroxide, 2024

World trade, 2024: $2.6bn

Top exporters, 2024

  • CHN 77%
  • CHL 10%
  • USA 7%
  • AUS 4%
  • RUS 1%
  • Others 2%

Lithium hydroxide is the chain’s chokepoint in 2024: HHI 0.61, CHN 77% of exports.

The ring shows the stage of this chain the economy leads; a dashed rowan ring marks an economy with more than half of the stage’s exports. Click an economy to follow its flows (exports gold, imports teal).

Open in the explorer
Why do some economies both import and export the same stage?
  • Different goods under one code. A six-digit code can hold cheap and costly versions of a product: 2506.10 covers quartzite lumps and high-purity quartz worth many times more per kilogram.
  • Processing and hub trade. Goods come in, are refined or assembled, and go out again.
  • Firms and regions. Firms or regions within one economy buy and sell for their own reasons, such as a firm shipping inputs to its own plants abroad.
  • How trade is recorded. Under the mirror rule an economy’s imports may come from its own reports and its exports from its partners’; origin and consignment, re-exports and misclassification can make one side larger.

“↔ two-way” marks an economy whose Grubel–Lloyd index is at least 0.3 and whose exports and imports are each at least 2% of world trade in the stage. The sentences under a stage give the numbers, never the reason. How two-way trade is measured

S1 · Ores and graphite

S1 · Lithium ore (spodumene concentrate)

2530.90
  • World trade, 2024$6.5bn×2.8 vs 2019
  • Unit value, 2024$0.36/kg2019: $0.17/kg
  • Exporter concentration, 20240.30high · 2019: 0.22
  • 175 exportersAUS 53%98% of value from importers’ reports

Top exporters, 2024

#EconomyShare of world exports, %2019, %
1AUS Australia52.845.7
2ZWE Zimbabwe12.6–
3BRA Brazil4.3–
4USA United States4.06.1
5NGA Nigeria3.2–

Top importers, 2024

#EconomyShare of world imports, %2019, %
1CHN China79.553.0
2KOR Korea2.3–
3USA United States1.34.3
4IND India1.3–
5FRA France1.12.9

Lithium ore (spodumene concentrate), 2024: shares of world exports and imports. Source: UN Comtrade, Final data, HS6; mirror rule.

Residual code: it holds other products too

Residual code "mineral substances n.e.c."; lithium concentrate dominates it only since the 2021-23 price boom. Brine lithium (Chile, Argentina) never trades as ore.

Exporter concentration (HHI), 1995–2025

Source: UN Comtrade, Final data, HS6; mirror rule.

World trade, 12-month sum, by month

Source: UN Comtrade, monthly data, HS6; 12-month sum; one side per flow (the importer's report where it filed as many months). Korea, Jan–Jul 2026: Korea Customs Service, trade by item and country (data.go.kr), fetched 31 Oct 2026.

S1 · Ores and graphite

S1 · Nickel ore

2604.00
  • World trade, 2024$4.4bn×0.9 vs 2019
  • Unit value, 2024$0.08/kg2019: $0.07/kg
  • Exporter concentration, 20240.25high · 2019: 0.25
  • 55 exportersPHL 47%100% of value from importers’ reports

Top exporters, 2024

#EconomyShare of world exports, %2019, %
1PHL Philippines47.230.7
2ZMB Zambia10.8–
3NCL New Caledonia7.99.8
4RUS Russia7.4–
5AUS Australia5.56.0

Top importers, 2024

#EconomyShare of world imports, %2019, %
1CHN China61.181.2
2IDN Indonesia10.5–
3CAN Canada 7.8–
4FIN Finland 6.74.6
5NAM Namibia5.5–

Canada imports $343m and exports $107m of this stage. Imports average $7.1/kg, exports $1.4/kg. Main suppliers: United States, Finland, Zambia. Main buyers: Finland, Brazil, China.

Nickel ore, 2024: shares of world exports and imports. Source: UN Comtrade, Final data, HS6; mirror rule.

What trade cannot see here

Indonesia banned ore exports in 2020, so its ore now shows up only as intermediates and nickel pig iron.

Exporter concentration (HHI), 1995–2025

The chain’s chokepoint in 2004, 2012, 2013, 2014, 2015.

Source: UN Comtrade, Final data, HS6; mirror rule.

World trade, 12-month sum, by month

Source: UN Comtrade, monthly data, HS6; 12-month sum; one side per flow (the importer's report where it filed as many months). Korea, Jan–Jul 2026: Korea Customs Service, trade by item and country (data.go.kr), fetched 31 Oct 2026.

S1 · Ores and graphite

S1 · Cobalt ore

2605.00
  • World trade, 2024$39m×0.2 vs 2019
  • Unit value, 2024–hidden: weight covers 57% of value
  • Exporter concentration, 20240.72high · 2019: 0.76
  • 36 exportersCOD 84%100% of value from importers’ reports

Top exporters, 2024

#EconomyShare of world exports, %2019, %
1COD DR Congo84.587.3
2LAO Laos8.1–
3ZMB Zambia2.01.5
4GBR UK1.0–
5NLD Netherlands1.0–

Top importers, 2024

#EconomyShare of world imports, %2019, %
1MAR Morocco47.612.6
2TWN Taiwan43.1–
3CHN China3.877.1
4FIN Finland0.94.5
5BEL Belgium0.6–

Cobalt ore, 2024: shares of world exports and imports. Source: UN Comtrade, Final data, HS6; mirror rule.

What trade cannot see here

Most Congolese cobalt leaves as hydroxide (the S2 stage), not as ore.

Exporter concentration (HHI), 1995–2025

The chain’s chokepoint in 2008, 2010, 2011.

Source: UN Comtrade, Final data, HS6; mirror rule.

World trade, 12-month sum, by month

Source: UN Comtrade, monthly data, HS6; 12-month sum; one side per flow (the importer's report where it filed as many months). Korea, Jan–Jul 2026: Korea Customs Service, trade by item and country (data.go.kr), fetched 31 Oct 2026.

S1 · Ores and graphite

S1 · Natural graphite

2504.102504.90
  • World trade, 2024$616m×1.0 vs 2019
  • Unit value, 2024$1.3/kg2019: $0.91/kg
  • Exporter concentration, 20240.28high · 2019: 0.24
  • 101 exportersCHN 50%99% of value from importers’ reports

Top exporters, 2024

#EconomyShare of world exports, %2019, %
1CHN China50.445.4
2MDG Madagascar10.46.3
3MOZ Mozambique7.113.7
4DEU Germany 6.46.1
5BRA Brazil3.7–

Top importers, 2024

#EconomyShare of world imports, %2019, %
1USA United States24.29.7
2DEU Germany 11.57.7
3JPN Japan10.016.6
4KOR Korea 7.315.0
5IND India7.0–

Germany imports $71m and exports $39m of this stage. Imports average $1.3/kg, exports $2.6/kg. Main suppliers: China, Madagascar, Brazil. Main buyers: France, Sweden, Austria.

Natural graphite, 2024: shares of world exports and imports. Source: UN Comtrade, Final data, HS6; mirror rule.

Use share: how much of this stage goes to this chain

About 32% of world graphite demand (natural and synthetic) goes to batteries for electric vehicles and storage. The map shows the whole flow, because that is what crossed the border; the trail draws 32% of it solid. Source: IEA, Global Critical Minerals Outlook 2025, annex table Graphite demand, p. 301, data for 2024.

Exporter concentration (HHI), 1995–2025

Source: UN Comtrade, Final data, HS6; mirror rule.

World trade, 12-month sum, by month

Source: UN Comtrade, monthly data, HS6; 12-month sum; one side per flow (the importer's report where it filed as many months). Korea, Jan–Jul 2026: Korea Customs Service, trade by item and country (data.go.kr), fetched 31 Oct 2026.

S2 · Refined chemicals

S2 · Lithium carbonate

2836.91
  • World trade, 2024$4.0bn×2.6 vs 2019
  • Unit value, 2024$12.7/kg2019: $10.9/kg
  • Exporter concentration, 20240.59high · 2019: 0.46
  • 54 exportersCHL 74%100% of value from importers’ reports

Top exporters, 2024

#EconomyShare of world exports, %2019, %
1CHL Chile73.864.7
2ARG Argentina21.215.5
3CHN China1.610.9
4KOR Korea0.9–
5DEU Germany0.81.8

Top importers, 2024

#EconomyShare of world imports, %2019, %
1CHN China68.816.0
2KOR Korea12.232.3
3JPN Japan6.120.8
4USA United States5.17.0
5NLD Netherlands2.8–

Lithium carbonate, 2024: shares of world exports and imports. Source: UN Comtrade, Final data, HS6; mirror rule.

Korea’s customs months: cells left out

For Jan–Sep 2026, Korea’s records come from the Korea Customs Service, whose item statistics leave out some of its imports of this stage: on Jan 2024–Dec 2025, when both sources hold Korea, they fall 12% short of its Comtrade file. Where the exporter filed, the missing flows are read from the exporter’s report and marked as such; elsewhere Korea’s imports here are understated by about that much.

Exporter concentration (HHI), 1995–2025

The chain’s chokepoint in 2017, 2018, 2020, 2022, 2023, 2025.

Source: UN Comtrade, Final data, HS6; mirror rule.

World trade, 12-month sum, by month

Source: UN Comtrade, monthly data, HS6; 12-month sum; one side per flow (the importer's report where it filed as many months). Korea, Jan–Jul 2026: Korea Customs Service, trade by item and country (data.go.kr), fetched 31 Oct 2026.

S2 · Refined chemicalsChokepoint

S2 · Lithium hydroxide

2825.20
  • World trade, 2024$2.6bn×2.4 vs 2019
  • Unit value, 2024$16/kg2019: $12.9/kg
  • Exporter concentration, 20240.61high · 2019: 0.46
  • 49 exportersCHN 77%100% of value from importers’ reports

Top exporters, 2024

#EconomyShare of world exports, %2019, %
1CHN China76.765.4
2CHL Chile10.212.0
3USA United States6.99.5
4AUS Australia3.6–
5RUS Russia0.76.3

Top importers, 2024

#EconomyShare of world imports, %2019, %
1KOR Korea62.735.9
2JPN Japan24.345.2
3CHN China4.4–
4SWE Sweden2.0–
5POL Poland1.1–

Lithium hydroxide, 2024: shares of world exports and imports. Source: UN Comtrade, Final data, HS6; mirror rule.

What trade cannot see here

Also holds lithium oxide.

Exporter concentration (HHI), 1995–2025

The chain’s chokepoint in 2019, 2021, 2024.

Source: UN Comtrade, Final data, HS6; mirror rule.

World trade, 12-month sum, by month

Source: UN Comtrade, monthly data, HS6; 12-month sum; one side per flow (the importer's report where it filed as many months). Korea, Jan–Jul 2026: Korea Customs Service, trade by item and country (data.go.kr), fetched 31 Oct 2026.

S2 · Refined chemicals

S2 · Nickel mattes and intermediates (incl. MHP)

7501.107501.202833.24
  • World trade, 2024$14.5bn×2.0 vs 2019
  • Unit value, 2024$5.1/kg2019: $6/kg
  • Exporter concentration, 20240.35high · 2019: 0.13
  • 66 exportersIDN 57%100% of value from importers’ reports

Top exporters, 2024

#EconomyShare of world exports, %2019, %
1IDN Indonesia57.016.7
2CAN Canada10.323.1
3FIN Finland 6.710.1
4RUS Russia5.815.0
5PHL Philippines4.19.1

Top importers, 2024

#EconomyShare of world imports, %2019, %
1CHN China57.822.0
2NOR Norway13.823.6
3JPN Japan13.826.6
4FIN Finland 4.812.5
5GBR UK2.97.2

Finland imports $694m and exports $971m of this stage. Imports average $7.8/kg, exports $7.1/kg. Main suppliers: Russia, Korea, Australia. Main buyers: Norway, China, France.

Nickel mattes and intermediates (incl. MHP), 2024: shares of world exports and imports. Source: UN Comtrade, Final data, HS6; mirror rule.

What trade cannot see here

Nickel sulphate (2833.24) sits here with the mattes; most mattes go to stainless steel, not batteries.

Use share: how much of this stage goes to this chain

About 15% of world nickel use goes to lithium-ion batteries for electric and hybrid cars (all nickel, not only these intermediates; stainless steel takes 64%). The map shows the whole flow, because that is what crossed the border; the trail draws 15% of it solid. Source: Natural Resources Canada, Nickel facts, data for 2024.

Exporter concentration (HHI), 1995–2025

Source: UN Comtrade, Final data, HS6; mirror rule.

World trade, 12-month sum, by month

Source: UN Comtrade, monthly data, HS6; 12-month sum; one side per flow (the importer's report where it filed as many months). Korea, Jan–Jul 2026: Korea Customs Service, trade by item and country (data.go.kr), fetched 31 Oct 2026.

S2 · Refined chemicals

S2 · Cobalt intermediates, oxides and hydroxides

8105.202822.00
  • World trade, 2024$5.1bn×1.1 vs 2019
  • Unit value, 2024$6.6/kg2019: $11/kg
  • Exporter concentration, 20240.44high · 2019: 0.23
  • 72 exportersCOD 66%98% of value from importers’ reports

Top exporters, 2024

#EconomyShare of world exports, %2019, %
1COD DR Congo65.744.6
2FIN Finland5.110.4
3CHN China4.67.2
4CAN Canada4.06.5
5USA United States 2.4–

Top importers, 2024

#EconomyShare of world imports, %2019, %
1CHN China62.145.1
2USA United States 6.811.7
3JPN Japan 3.09.6
4BEL Belgium3.0–
5NAM Namibia2.8–

United States imports $345m and exports $123m of this stage. Imports average $30.3/kg, exports $22.4/kg. Main suppliers: Norway, Canada, Japan. Main buyers: France, Ireland, Germany.

Cobalt intermediates, oxides and hydroxides, 2024: shares of world exports and imports. Source: UN Comtrade, Final data, HS6; mirror rule.

Exporter concentration (HHI), 1995–2025

Source: UN Comtrade, Final data, HS6; mirror rule.

World trade, 12-month sum, by month

Source: UN Comtrade, monthly data, HS6; 12-month sum; one side per flow (the importer's report where it filed as many months). Korea, Jan–Jul 2026: Korea Customs Service, trade by item and country (data.go.kr), fetched 31 Oct 2026.

S3 · Electrode materials and parts

S3 · Cathode active material

2841.902842.90
  • World trade, 2024$7.5bn×1.9 vs 2019
  • Unit value, 2024$14.2/kg2019: $9.9/kg
  • Exporter concentration, 20240.40high · 2019: 0.30
  • 95 exportersKOR 56%98% of value from importers’ reports

Top exporters, 2024

#EconomyShare of world exports, %2019, %
1KOR Korea 56.345.4
2CHN China 27.023.3
3JPN Japan 9.220.5
4USA United States1.72.3
5DEU Germany1.12.1

Top importers, 2024

#EconomyShare of world imports, %2019, %
1CHN China 32.844.1
2POL Poland22.3–
3KOR Korea 15.823.3
4JPN Japan 5.412.7
5MYS Malaysia3.72.5

Korea imports $1.2bn and exports $4.2bn of this stage. Imports average $21.6/kg, exports $24.7/kg. Main suppliers: China, Japan, United States. Main buyers: China, Poland, Malaysia.

Cathode active material, 2024: shares of world exports and imports. Source: UN Comtrade, Final data, HS6; mirror rule.

Residual code: it holds other products too

No code of its own. NCM and NCA mostly fall in 2841.90, LFP in 2842.90, and some customs put them in 3824.99. Both codes hold unrelated salts too.

Exporter concentration (HHI), 1995–2025

Source: UN Comtrade, Final data, HS6; mirror rule.

World trade, 12-month sum, by month

Source: UN Comtrade, monthly data, HS6; 12-month sum; one side per flow (the importer's report where it filed as many months). Korea, Jan–Jul 2026: Korea Customs Service, trade by item and country (data.go.kr), fetched 31 Oct 2026.

S3 · Electrode materials and parts

S3 · Anode graphite (artificial)

3801.10
  • World trade, 2024$2.3bn×1.3 vs 2019
  • Unit value, 2024$1.9/kg2019: $2.5/kg
  • Exporter concentration, 20240.37high · 2019: 0.17
  • 84 exportersCHN 60%98% of value from importers’ reports

Top exporters, 2024

#EconomyShare of world exports, %2019, %
1CHN China59.735.0
2JPN Japan 6.713.4
3DEU Germany 6.2–
4USA United States 5.710.1
5KOR Korea 4.6–

Top importers, 2024

#EconomyShare of world imports, %2019, %
1USA United States 18.320.7
2MYS Malaysia16.77.3
3POL Poland8.6–
4HUN Hungary7.1–
5DEU Germany 6.4–

United States imports $431m and exports $134m of this stage. Imports average $3.7/kg, exports $6.7/kg. Main suppliers: China, Korea, Mexico. Main buyers: China, Germany, Korea.

Anode graphite (artificial), 2024: shares of world exports and imports. Source: UN Comtrade, Final data, HS6; mirror rule.

What trade cannot see here

Also electrodes' feedstock for steel furnaces; spherical natural graphite stays in 2504.90.

Use share: how much of this stage goes to this chain

About 32% of world graphite demand (natural and synthetic) goes to batteries for electric vehicles and storage. The map shows the whole flow, because that is what crossed the border; the trail draws 32% of it solid. Source: IEA, Global Critical Minerals Outlook 2025, annex table Graphite demand, p. 301, data for 2024.

Exporter concentration (HHI), 1995–2025

Source: UN Comtrade, Final data, HS6; mirror rule.

World trade, 12-month sum, by month

Source: UN Comtrade, monthly data, HS6; 12-month sum; one side per flow (the importer's report where it filed as many months). Korea, Jan–Jul 2026: Korea Customs Service, trade by item and country (data.go.kr), fetched 31 Oct 2026.

S3 · Electrode materials and parts

S3 · Battery parts (separators, cans, other parts)

8507.90
  • World trade, 2024$10.5bn×1.9 vs 2019
  • Unit value, 2024$11.7/kg2019: $10.3/kg
  • Exporter concentration, 20240.18moderate · 2019: 0.16
  • 135 exportersCHN 37%96% of value from importers’ reports

Top exporters, 2024

#EconomyShare of world exports, %2019, %
1CHN China37.313.9
2KOR Korea 12.716.3
3JPN Japan 11.033.0
4POL Poland 4.5–
5DEU Germany 4.03.9

Top importers, 2024

#EconomyShare of world imports, %2019, %
1USA United States39.127.1
2DEU Germany 8.58.7
3POL Poland 5.411.7
4CAN Canada4.9–
5JPN Japan 4.3–

Japan imports $449m and exports $1.2bn of this stage. Imports average $32.1/kg, exports $29.6/kg. Main suppliers: China, United States, Philippines. Main buyers: United States, Singapore, China.

Battery parts (separators, cans, other parts), 2024: shares of world exports and imports. Source: UN Comtrade, Final data, HS6; mirror rule.

Residual code: it holds other products too

Parts of every kind of accumulator, lead-acid included. Separators, cans and battery management parts travel here; electrolyte does not (it sits in residual chemical codes).

Exporter concentration (HHI), 1995–2025

Source: UN Comtrade, Final data, HS6; mirror rule.

No monthly series for this stage.

S4 · Cells and packs

S4 · Lithium-ion cells and packs

8507.60
  • World trade, 2024$115.4bn×3.8 vs 2019
  • Unit value, 2024$32.2/kg2019: $47.2/kg
  • Exporter concentration, 20240.38high · 2019: 0.22
  • 181 exportersCHN 60%95% of value from importers’ reports

Top exporters, 2024

#EconomyShare of world exports, %2019, %
1CHN China60.242.3
2POL Poland6.26.8
3USA United States 5.8–
4HUN Hungary5.6–
5KOR Korea 4.015.6

Top importers, 2024

#EconomyShare of world imports, %2019, %
1USA United States 20.712.2
2DEU Germany20.412.0
3MEX Mexico4.9–
4KOR Korea 4.1–
5VNM Vietnam3.95.5

United States imports $23.9bn and exports $6.7bn of this stage. Imports average $50.5/kg, exports $29.9/kg. Main suppliers: China, Japan, Korea. Main buyers: Mexico, Canada, Australia.

Lithium-ion cells and packs, 2024: shares of world exports and imports. Source: UN Comtrade, Final data, HS6; mirror rule.

What trade cannot see here

Phone and laptop batteries are in the same code as car packs.

Use share: how much of this stage goes to this chain

About 90% of lithium-ion battery demand is for the energy sector (electric vehicles and grid storage; EVs take over 90% of that). The map shows the whole flow, because that is what crossed the border; the trail draws 90% of it solid. Source: IEA, Batteries and Secure Energy Transitions (2024), p. 11, data for 2023.

Also in another chain

This stage also feeds Chips and electronics; where both chains use the same code, it is one network, shown in each.

Exporter concentration (HHI), 1995–2025

Source: UN Comtrade, Final data, HS6; mirror rule.

World trade, 12-month sum, by month

Source: UN Comtrade, monthly data, HS6; 12-month sum; one side per flow (the importer's report where it filed as many months). Korea, Jan–Jul 2026: Korea Customs Service, trade by item and country (data.go.kr), fetched 31 Oct 2026.

S5 · Electric cars

S5 · Battery-electric and plug-in cars

8703.808703.608703.70
  • World trade, 2024$199.6bn×5.8 vs 2019
  • Unit value, 2024$19.1/kg2019: $20.7/kg
  • Exporter concentration, 20240.13unconcentrated · 2019: 0.11
  • 126 exportersDEU 26%98% of value from importers’ reports

Top exporters, 2024

#EconomyShare of world exports, %2019, %
1DEU Germany 25.716.5
2CHN China19.1–
3JPN Japan7.39.0
4KOR Korea7.09.9
5MEX Mexico5.8–

Top importers, 2024

#EconomyShare of world imports, %2019, %
1USA United States 15.912.0
2GBR UK 10.5–
3DEU Germany 8.910.6
4FRA France7.0–
5CAN Canada5.0–

Germany imports $17.8bn and exports $51.2bn of this stage. Imports average $19.7/kg, exports $21.2/kg. Main suppliers: China, United States, Spain. Main buyers: UK, United States, France.

Battery-electric and plug-in cars, 2024: shares of world exports and imports. Source: UN Comtrade, Final data, HS6; mirror rule.

What trade cannot see here

Before HS2017 electric cars were in 8703.90 with other vehicles.

Exporter concentration (HHI), 1995–2025

Source: UN Comtrade, Final data, HS6; mirror rule.

World trade, 12-month sum, by month

Source: UN Comtrade, monthly data, HS6; 12-month sum; one side per flow (the importer's report where it filed as many months). Korea, Jan–Jul 2026: Korea Customs Service, trade by item and country (data.go.kr), fetched 31 Oct 2026.

How these numbers are made

Each chain has its own ladder of stages, one rung per step of production that customs records can see: four for clothing, eight for chips. Each stage is a set of six-digit HS codes, written down once with the rung it sits on and what else its code holds. World trade is the sum of bilateral flows under the mirror rule: the importer’s report where the importer reported that year, otherwise the exporter’s. Unit value is value over net weight, shown only where weight covers at least 80% of value. HHI is the sum of squared exporter shares; 0.15 and 0.25 mark moderate and high concentration.

Customs records see goods crossing a border, not what they were for. Production used at home, codes that hold two products and codes split by HS versions are named at the stage where they matter. Use shares, where a stage mostly goes elsewhere, come from dated sources outside trade; they scale the trail, never the map. The full method

Source: UN Comtrade, Final data, HS6; mirror rule. Updated 2 Nov 2026.

datasteg: the flow sites