Cases · Tools
Cut a supplier
Pick a stage of one of the ten chains and an exporter, and cut its exports: who loses what share of their supply, who could fill the gap, and what passes one stage down the chain. First-round arithmetic on 2024 trade shares, not a forecast.
- 89stages to choose from
- 2024the year of the shares
- 25exporters of this stage listed
Chips and electronics · S7 · Phone and computer parts (assembled boards and others)
Cut the exports of China in Phone and computer parts (assembled boards and others) (Chips and electronics, stage 7) and follow the shortfall to the importers and one stage down the chain.
Who loses what share of their supply: Phone and computer parts, 2024
- World exports cut36.3%
- Importers with over a quarter at risk31
| Importer | At risk, share of its imports | Its other suppliers would ship |
|---|---|---|
| 82.5% | +470% | |
| 80.1% | +403% | |
| 77.2% | +339% | |
| 72.7% | +266% | |
| 70.5% | +239% | |
| 63.3% | +172% | |
| 63.2% | +172% | |
| 63% | +170% | |
| 60.7% | +154% | |
| 59% | +144% | |
| 57.3% | +134% | |
| 56.7% | +131% |
* Did not file this period: its imports are seen through its partners’ reports.
Who could fill the gap: India, 82.5% of its imports
The suppliers it already buys from, in proportion to their shares: each would have to ship 470% more. Share now, then the part of the gap it would take:
- Vietnam 8.3% +39.2 pp
- Korea 2.3% +10.6 pp
- Malaysia 2% +9.5 pp
- Taiwan 1.3% +6.3 pp
- Hong Kong 0.95% +4.5 pp
- Thailand 0.63% +3 pp
- Smaller suppliers 2% +9.4 pp
The largest other exporters, by share of world exports
- Taiwan 19.1% · already a supplier
- Vietnam 12.5% · already a supplier
- Korea 10.3% · already a supplier
- Malaysia 4.5% · already a supplier
- United States 2.5%
One stage down the chain
Smartphones
Upper bound (100% pass-through, no use share). This stage feeds only this chain, so the chain file gives it no use share and the whole shortfall passes down.
17.9% of world smartphones exports at risk in the first round, summed over the 22 large exporters with an exposure upstream. The 8 listed below carry 16.3%.
| Exporter | Its exposure upstream | World exports at risk |
|---|---|---|
| India | 82.5% | 6.2% |
| Vietnam | 72.7% | 6.1% |
| Hong Kong | 56.7% | 1.8% |
| Saudi Arabia | 42.9% | 0.63% |
| Czechia | 47.1% | 0.53% |
| Korea | 29.1% | 0.44% |
| Netherlands | 15.7% | 0.33% |
| UAE | 48.3% | 0.28% |
Laptops and computer units
Upper bound (100% pass-through, no use share). This stage feeds only this chain, so the chain file gives it no use share and the whole shortfall passes down.
23.7% of world laptops and computer units exports at risk in the first round, summed over the 24 large exporters with an exposure upstream. The 8 listed below carry 20.8%.
| Exporter | Its exposure upstream | World exports at risk |
|---|---|---|
| Taiwan | 60.7% | 6.3% |
| Vietnam | 72.7% | 5.8% |
| Mexico | 34.9% | 5.1% |
| Malaysia | 39.5% | 0.89% |
| Czechia | 47.1% | 0.85% |
| Thailand | 37.5% | 0.72% |
| United States | 12.8% | 0.69% |
| Germany | 36.7% | 0.56% |
An exporter of the next stage loses its share of world exports × its own exposure upstream (× the use share). Exporters on a closed route lose their own exports × the cut. Exposure upstream is the share of its imported phone and computer parts that came from the closed supplier, not of all the phone and computer parts it uses: where most are made at home (Japan, Korea, Germany for car parts), it overstates the risk.
First-round arithmetic on trade shares, not a forecast: an importer’s exposure is its import share from the shocked suppliers × the cut. No stocks, no new suppliers, no price changes.
Suppliers are read from the flows the map stores for the stage: each importer’s ten largest suppliers and every flow above 0.05% of world trade; the rest are “smaller suppliers”. The next stage and the use share come from the chain file.