Product classification
HS code for Test bench: 9031.20
Test benches.
Classification of test bench under HS 9031.20
HS code 9031.20 is designated for test benches, which are specialized apparatuses used for measuring or checking the performance, characteristics, or integrity of various mechanical, electrical, or hydraulic components. This classification is situated within Chapter 90, which encompasses optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus. Test benches are distinct because they are integrated systems designed to simulate operational conditions for the item under test. Unlike general-purpose measuring tools, a test bench provides a controlled environment to evaluate complex parameters such as torque, pressure, flow, or electrical output under load. The classification under 9031.20 is appropriate when the equipment's primary function is the 'checking' or 'testing' of a product's functionality rather than just measuring a single physical property like weight or length. These benches are essential in automotive, aerospace, and industrial manufacturing for quality control and research and development.
- Covers
- Engine test stands for internal combustion engines
- Hydraulic pump and valve test benches
- Fuel injection system test stands
- Torque and transmission test benches
- Electrical motor performance test benches
- Brake system test stands
- Also under 9031.20
- AVL Test Systems
- FEV Test Systems
- Horiba Test Systems
- DynoJet (industrial dynamometers)
Codes often confused with 9031.20
Common mistake. Test benches are frequently misclassified under HS code 9024, which covers machines and appliances for testing the hardness, strength, compressibility, elasticity, or other mechanical properties of materials (like steel or plastic). While 9024 focuses on material properties, 9031.20 focuses on the functional performance of a finished component or machine. Another error is using HS code 8479, which covers machines with individual functions not specified elsewhere. However, because Chapter 90 is more specific to 'checking and measuring,' it takes precedence over Chapter 84 for these types of diagnostic systems.
Top exporters and importers of HS 903120 (the code used for test bench), 2025
In 2025, the largest exporter of HS 903120 (the code used for test bench) 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.
Figures cover everything classified under HS 903120, not only test bench.
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 test bench
Brazil splits HS 9031.20 into 2 NCM codes. Pick the one that matches your product:
- 9031.20.10Engine test benches
- 9031.20.90Other test benches
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about test bench
What is the HS code for Test bench?
The HS code for Test bench is 903120 (Test benches). The correct HS code for a test bench designed for checking engines, pumps, or other functional components is 9031.20.
How do I classify Test bench for customs?
Test bench is classified under HS code 903120 — Test benches. This is a 6-digit subheading level code.
What is the difference between HS 9031 and HS 9024?
HS 9031.20 is for testing the performance of a machine or part (e.g., an engine), while HS 9024 is for testing the physical properties of a material (e.g., the tensile strength of a metal bar).
Which countries are the top exporters of test bench (HS 903120)?
In 2025, the top exporters of HS 903120 (the code used for test bench) 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 test bench (HS 903120)?
In 2025, the top importers of HS 903120 (the code used for test bench) 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.
Is the HS code for Test bench the same in all countries?
The base HS code 903120 for Test bench is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for test bench in Brazil?
Brazil splits HS 903120 into 2 NCM codes, so the right one for test bench depends on the product's details: 9031.20.10 (Engine test benches), 9031.20.90 (Other test benches).