HS code · 6-digit subheading
HS Code 9031.20 – Test benches
HS code 9031.20 is the 6-digit subheading for test benches. It is used for engine test benches, transmission test benches, brake test benches, hydraulic pump test stands and valve test benches.
What HS 9031.20 covers
This HS code specifically covers 'test benches,' which are specialized platforms or integrated systems designed for rigorously testing the performance, durability, and functionality of various mechanical, hydraulic, pneumatic, or electrical components and assemblies under controlled and simulated operating conditions. These systems are crucial for quality control, research and development, and certification processes in high-stakes industries such as automotive, aerospace, heavy machinery, and power systems. Importers and exporters include large manufacturing firms, research institutions, and specialized testing service providers. Key aspects involve robust construction, precise measurement capabilities, and often customizability to specific testing requirements, allowing for comprehensive evaluation of complex systems before deployment. Their role is vital in ensuring product reliability, safety, and compliance with industry standards.
- Covers
- Engine test benches
- Transmission test benches
- Brake test benches
- Hydraulic pump test stands
- Valve test benches
- Gear box test benches
- Dynamometers (as part of a bench)
- Examples
- AVL Test Systems
- FEV Test Systems
- Horiba Test Systems
- DynoJet (industrial dynamometers)
Codes often confused with 9031.20
Common mistake. Can be confused with other general measuring or checking instruments under 903180, but 'test benches' implies a more comprehensive system or platform for integrated testing of an entire component or assembly, distinct from individual measuring instruments.
Top exporters and importers of HS code 903120, 2025
In 2025, the largest exporter of HS code 903120 in UN Comtrade data was Germany, with 29% of world exports; the largest importer in UN Comtrade data was China, with 19% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 Germany $557M 29% of world exports
- 2 Italy $226M 12% of world exports
- 3 Austria $166M 8.6% of world exports
World total: $1.9B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 China $289M 19% of world imports
- 2 United States $208M 13% of world imports
- 3 India $85M 5.5% of world imports
World total: $1.6B Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM codes for 9031.20 2
Brazil splits HS 9031.20 into 2 NCM codes, Mercosur's 8-digit tariff lines.
All Brazil NCM codes in heading 90.31 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 9031.20
What is HS code 903120?
HS code 903120 is a 6-digit subheading in the Harmonized System that covers: Test benches. This HS code specifically covers 'test benches,' which are specialized platforms or integrated systems designed for rigorously testing the performance, durability, and functionality of various mechanical, hydraulic, pneumatic, or electrical components and assemblies under controlled and simulated operating conditions. These systems are crucial for quality control, research and development, and certification processes in high-stakes industries such as automotive, aerospace, heavy machinery, and power systems. Importers and exporters include large manufacturing firms, research institutions, and specialized testing service providers. Key aspects involve robust construction, precise measurement capabilities, and often customizability to specific testing requirements, allowing for comprehensive evaluation of complex systems before deployment. Their role is vital in ensuring product reliability, safety, and compliance with industry standards.
What products fall under HS code 903120?
Engine test benches, transmission test benches, brake test benches, hydraulic pump test stands, valve test benches, gear box test benches, dynamometers (as part of a bench)
What are common misclassifications for HS code 903120?
Can be confused with other general measuring or checking instruments under 903180, but 'test benches' implies a more comprehensive system or platform for integrated testing of an entire component or assembly, distinct from individual measuring instruments.
Which countries are the top exporters of goods under HS code 903120?
In 2025, the top exporters of HS code 903120 in UN Comtrade data were Germany ($557M, 29% of world exports), Italy ($226M) and Austria ($166M). World exports came to about $1.9B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of goods under HS code 903120?
In 2025, the top importers of HS code 903120 in UN Comtrade data were China ($289M, 19% of world imports), the United States ($208M) and India ($85M). World imports came to about $1.6B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
How is HS code 903120 structured?
HS code 903120 is a 6-digit subheading under the Harmonized System. The first 2 digits (90) identify the chapter, digits 3-4 (31) identify the heading, and digits 5-6 (20) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 903120?
Brazil splits HS code 903120 into 2 NCM codes: 9031.20.10 (Engine test benches), 9031.20.90 (Other test benches). The first 6 digits of each match the HS code.